Abstract: The technologies described herein are directed towards a digital twin system coupled to one or more spare (unused in the active quantum circuit) qubits for optimized quantum circuit execution to enhance real-time phase monitoring and error correction. The digital twin system, via the spare qubit or qubits, mirrors the real-time execution of quantum circuits, utilizing spare qubits to optimize resource utilization, to detect errors in phase shifts, and to implement adaptive corrections by evaluating the interaction between active and spare qubits. By using spare qubits, the digital twin replicates real-time quantum execution, tracking the integrity of quantum states through controlled phase shifts to identify phase shift errors and adaptively correct for phase shift deviations. Via the spare qubit or qubits, the real-time detection of phase shift deviations, monitoring of noise, and ensuring of quantum state integrity is performed without disrupting ongoing quantum operations.

Abstract: A metasurface unit cell array of a plurality of metasurface unit cells to manipulate reflection of incoming RF signals comprising a metasurface hardware controller executing code instructions of a metasurface hardware geofencing system to identify an angle of arrival of the incoming RF signals from consecutive metasurface unit cells to determine an expected phase delay of the incoming RF signals and compare it to a measured phase delay of the incoming RF signals from an reconfigurable delay detection network (RDDN) to identify a phase delay deviation indicating compromised integrity of the incoming RF signals. The metasurface hardware controller to detect the incoming RF signal from the RDDN and iteratively switch a switchable capacitive load at the RDDN to determine a corresponding a dynamic phase delay and introduce that dynamic phase delay into a reflected RF signal at the metasurface unit cells via a tunable varactor to secure wireless communication.

Abstract: A system and method of self-powering a metasurface unit cell array operatively coupled to the information handling system to harvest power from an incident radiofrequency (RF) signal, the metasurface unit cell array including a plurality of metasurface unit cells, each of the plurality of metasurface unit cells including: a reflective element to reflect a portion of the RF signal incident to the surface of the metasurface unit cell array, and a substrate-integrated waveguide (SIW) to harvest power from a second portion of the RF signal via a rectifier circuit to convert the captured RF signals into direct current (DC) voltage output. A metasurface PMU to selectively charge a first battery and discharge a second battery of the metasurface unit cell array to power the metasurface unit cell array or generate transmissions of a tracking location data RF signal towards a receiving device to track the information handling system.

Abstract: The technology described herein is directed towards using a wearable passive metasurface (e.g., in the form of a ring) to reflect signals representative of user interaction with computer peripheral devices (e.g., a mouse and keyboard) coupled to a computing device. The reflected signals correspond to user interaction pattern data (user activity profile data) during times of user interaction with the computer. In one implementation, a multi-modal machine learning (ML) classifier processes features of the user interaction pattern data, extracted from time and frequency domain analyses, to recognize habitual interaction patterns of a user, as well as detect any deviations from the user's ordinary interaction behavior, possibly indicating a different user. An interaction pattern that is associated with the user can facilitate ongoing authentication.

Abstract: The technology described herein is generally directed towards using controlled multi-throw switches and signal splitters in a cryogenic microwave signal routing system and architecture. The multi-throw switches and signal splitters are controlled in a multiplexed fashion to manage analog waveform delivery to qubits under the control of classical logic. Similarly, multiplexed qubit readout is facilitated using multi-throw switch control. The multiplexed signal delivery to qubits, by controlling switch selection, signal splitter selection, and their states, results in high-fidelity qubit control in large qubit arrays. Qubit readout can be accomplished via switch selection and switch state control, facilitating multiplexed signal readout from any selected qubit.

Abstract: The technologies described herein are directed towards using spare (unused with respect to active use by a quantum process) qubits as “canary” qubits that are measured, after application of a sequence of gates, to detect whether decoherence or noise adversely affected active qubits used in a quantum processing unit. An adaptive canary qubit system obtains telemetry data from sensors in a quantum system, and uses the telemetry data to update a noise map and rank noisy “hotspot” regions” of the quantum processing unit by noisiness. A canary qubit assigned to a hotspot region has its state measured after application of a gate sequence. If the spare qubit is in an error state, the adaptive canary qubit system reassigns an active logical qubit from that hotspot region to a less noisy region. The system includes a model that predicts placement of canary qubits based on historical telemetry data and prior results.

Abstract: A system and method of monitoring wireless network access includes a reconfigurable metasurface unit cell array, a metasurface hardware controller, and a metasurface power management unit to provide power to the metasurface hardware controller, wherein the reconfigurable unit cell array manipulates radiofrequency (RF) waves of incident RF signals transmitted or received within a RF environment. The metasurface unit cell array includes a unique identification (ID) circuit to receive, from a unique ID circuit writer at an administrator system, wireless network access permission data describing accessibility to partitioned wireless connections to a provisioned wireless network.

Abstract: The technology described herein is directed towards a binary-to-stochastic converter integrated with a phase change memory architecture. Phase change material memory cells used in phase change memory are set to their low resistance (“SET”) states, with the various low resistance values forming a distribution. A binary input vector is used to generate a reference voltage based on the bit ordering (different weighted voltages) and bit values of the vector. The reference voltage is used to determine each resistance value in the distribution relative to a threshold resistance value determined by the reference voltage. Resistance values below the threshold result in a one-bit output to the stochastic vector, while those above result in a zero-bit output to the stochastic vector. For stochastic vectors written to an in-memory compute array, stochastic arithmetic (e.g., multiply-and-accumulate operations) can be used to obtain a result much faster than conventional processing of operand.

Abstract: The technologies described herein are generally directed towards controlling a signal splitter, a switch matrix and a multi-throw switch in a cryogenic microwave signal routing system and architecture. The signal splitter and switch matrix are controlled in a multiplexed fashion to manage analog waveform delivery to qubits under the control of classical logic. Similarly, multiplexed qubit readout is facilitated using multi-throw switch control. The multiplexed signal delivery to qubits, by controlling signal splitter state selection and switch matrix addressing, results in high-fidelity qubit control in large qubit arrays. Qubit readout can be accomplished via multi-throw switch state control, facilitating multiplexed signal readout from any selected qubit.

Abstract: The technologies described herein are directed towards a transformer-based quadrature coupler suitable for high radio frequency (RF) signals. In one implementation, the transformer-based quadrature coupler is based on a three-metal layer design with four planar coils at an upper metal layer, and two planar coils at a lower metal layer. Parts of the upper metal layer planar coils overlap with portions of the lower metal layer coils. A middle metal layer includes metal strips, including between the overlapping regions, which facilitates higher coupling efficiency and consistent bandwidth in the transformer-based quadrature coupler. In one implementation, the quadrature coupler is fabricated on a substrate via conventional printed circuit board techniques.

Abstract: The technology described herein is directed towards a phase change memory array of phase change memory unit cells. The phase change memory unit cells include phase change material doped with carbon and platinum, resulting in a faster transition (relative to non-doped phase change material) from the material's amorphous state to its crystalline state. Wordlines couple rows of the cells together, and bitlines couple columns of the cells together, facilitating multibit data storage and retrieval. An activated wordline activates an entire row of memory cells, whereby write voltage pulses applied to the bitlines write to heating elements that determine each unit cell material's amorphous or crystalline state, while read voltage pulses read the phase change material state as a “1” or “0” bit. The array can be monolithically integrated, eliminating the need for surface-mount components, and can be integrated into larger memory architectures, enabling scalability to very large memory capacities.

Abstract: A system and method includes a metal-insulator-transition (MIT)-based metasurface privacy layer formed over a digital display panel of a digital display device comprising a first thermoelectric element layer and a second thermoelectric element layer each having a plurality of thermoelectric material rods, an MIT layer to transition from a transparent state to a metallic opaque state along the thermoelectric material rods with heating, and a transparent nano-patch grating and diffraction layer that diffracts images.

Abstract: A system and method comprising a reconfigurable metasurface comprising a metasurface hardware controller and a plurality of reconfigurable metasurface unit cells each including a plurality of metallization nodes, a plurality of metal-insulator-transition (MIT) node membranes disposed onto a surface of a second dielectric layer and separated from the metallization nodes by a first dielectric layer, a plurality of addressable heaters formed to selectively pulse heat to phase change material of each of the plurality of MIT node membranes to switch between an insulative state and conductive state, and a conductive c-shaped resonator formed below the second dielectric layer to electromagnetically couple to a plurality of metallization nodes corresponding to the MIT node membranes that are switched to the conductive state for control over converting an incident RF signal in the first polarization state to a reflected RF signal in a second polarization state by the reconfigurable metasurface.

Abstract: The technology described herein is directed towards a phase change material-based unit cell for use in a phase change memory device, such as a phase change memory array. The phase change material-based unit cell includes phase change material (e.g., Sb2Te3) doped with percentages of carbon and platinum. The doped phase change material reduces the time taken to write a one-bit value to the phase change material (the SET time), making it comparable to the RESET time taken to write a zero-bit, which is a drawback of traditional phase change memory. In one implementation, the doped phase change material is incorporated into a unit cell design with improved heat management for efficient phase transition by incorporating a thermally resistive dielectric layer that minimizes heat loss to the substrate during write operations. The faster performance of the phase change memory cell facilitates usage in nonvolatile memory in computers.

Abstract: A system and method of self-powering a metasurface unit cell array operatively coupled to the information handling system to harvest power from an incident radiofrequency (RF) signal, the metasurface unit cell array including a plurality of metasurface unit cells, each of the plurality of metasurface unit cells including: a reflective element to reflect a portion of the RF signal incident to the surface of the metasurface unit cell array, and a substrate-integrated waveguide (SIW) to harvest power from a second portion of the RF signal via a rectifier circuit to convert the captured RF signals into direct current (DC) voltage output. A metasurface PMU to selectively charge a first battery and discharge a second battery of the metasurface unit cell array to power the metasurface unit cell array or generate transmissions of a tracking location data RF signal towards a receiving device to track the information handling system.

Abstract: The technology described herein is directed towards a phase change memory architecture including one partition for storing data, and another partition for in-memory computation (processing-in memory). The phase change memory architecture includes phase change memory unit cells that include phase change material doped with carbon and platinum, resulting in a faster transition (relative to non-doped phase change material) from the material's amorphous state to its crystalline state. By integrating processing units directly within memory, data transfers are significantly reduced. Stochastic arithmetic can be used to enhance the efficiency and speed of computations, including for convolutional neural networks (CNNs) that perform a significant amount of heavy multiply-and-accumulate operations. The dual-partition phase change memory hardware architecture can be seamlessly integrated with heterogenous computing systems.

Abstract: The technology described herein is directed towards designing and configuring a reconfigurable intelligent surface for deployment, based on a straightforward path-loss model having simplified input variables available to a designer, and having mitigated characterization complexity when compared to other path loss models. The relatively large distance that exists between the feed antenna and a reconfigurable intelligent surface facilitates approximation of certain factors, resulting in a practical solution for design and deployment of a reconfigurable intelligent surface of interest. The input variables include the geometry of the reconfigurable intelligent surface, receiver gain, transmitter gain, and the directivity of the transmitting antenna, which are parameters that are easily available to a designer for deploying a reconfigurable intelligent surface.

Abstract: The technology described herein is directed towards real-time monitoring of qubit states in quantum computers using a system based on distributed rf-SQUIDs (radio-frequency superconducting quantum interference devices) and a control line/detection line that carries RF signals from and to a classical computing device. In one implementation, the rf-SQUIDs are distributed at specific distances between superconducting quantum circuit wires, and parallel to the control line/detection wire). The control line facilitates the detection of phase shifts without adding load or noise to the superconducting quantum circuit wires, which enhances the detection of qubit entanglement, decoherence, and/or other qubit state changes. The monitoring and detection system dynamically and precisely monitors qubit state changes and provides real-time feedback to the quantum circuits to adjust the qubit states to maintain the integrity of quantum computations.

Abstract: A system and method for manufacturing tolerance agnostic metasurface unit cells on a metasurface. The information handling system may include a processor, memory, power source, and a chassis having at least one external surface with a passive metasurface unit cell array operatively coupled to the at least one external surface. The passive metasurface unit cell array includes a plurality of metasurface unit cells, each of the plurality of metasurface unit cells including a uniformly-sized resonating main body formed to be sized uniformly across the plurality of metasurface unit cells and having a phase-delay line formed to extend at different lengths from the uniformly-sized resonating main body to introduce a phase difference across the plurality of metasurface unit cells to generate an interference pattern for beamforming in a reflected radio frequency signal reflected off of the surface of the metasurface unit cell array.

Abstract: The technologies described herein are directed towards a tunable bandstop filter capable of operating at cryogenic temperatures. The bandstop filter includes respective capacitors, and respective inductors inductively coupled to respective RF-SQUID sets. The respective inductor inductances are controllable by applying a voltage to respective DC control lines inductively coupled to the respective RF-SQUID sets, which in turn are inductively coupled to the respective inductors. The controllably tuned inductance adjusts the frequency band that the bandstop filter attenuates. The tunable device attenuates noise frequencies to pass a cleaner microwave signal directed for interaction with qubits, for example, and improves overall qubit stability. In one example implementation, a classical computing device can be used to monitor the qubits following qubit interaction with a microwave signal from a photon source, detecting any deviations or noise-induced errors.