Abstract: Disclosed are a synchronous triggering system, a quantum control system and a quantum computer. The synchronous triggering system comprises a central control device, several routing boards and several functional boards. It guarantees the synchronous triggering of the triggering signals by means of a three-stage triggering synchronization system. In the first stage, the central control device provides several sets of triggering signals to corresponding routing boards, and adjusts an initial time point for each set of triggering signals to output so that each chassis receives the triggering signals concurrently. In the second stage, communication lines from each routing board to the several functional boards are of equal length. In the third stage, the triggering signals arrive at several data-processing devices simultaneously after being processed under the AND-operation of an AND-gate chip.

Abstract: A quantum control system, and a quantum computer are provided. The quantum control apparatus includes a backplane, a routing module, at least one quantum state control module, at least one frequency control module, and at least one measurement module. The quantum state control module, the frequency control module, the measurement module and the routing module are arranged in sockets of the backplane. The quantum state control module, the frequency control module, and the measurement module are all in communication connection with the routing module, and perform data interaction via the routing module.

Abstract: Embodiments of the disclosure provide a quantum chip system, a quantum computing processing system and an electronic apparatus, wherein one quantum chip system includes at least one first qubit, each first qubit includes at least two control electrodes, and a first event register for controlling the control electrode, wherein each first event register is configured for storing a control signal of the control electrode, and each first qubit corresponds to at least two first event registers.

Abstract: A quantum circuit, a quantum chip, and a quantum computer. The quantum circuit includes qubits, adjacent qubits being coupled, and each of the qubits including: a first capacitor, a first end of the first capacitor being grounded; a second capacitor, a first end of the second capacitor and the first end of the first capacitor being commonly grounded; and a first device, including a first squid and a third capacitor that are connected in parallel, wherein parallel-connected first ends of the first squid and the third capacitor are connected to a second end of the first capacitor, and parallel-connected second ends of the first squid and the third capacitor are connected to a second end of the second capacitor. According to the present disclosure, parameters of at least one of a plurality of capacitors in a qubit circuit can be adjusted, so that the design of the capacitor is more flexible and less spatially limited, which facilitates design and layout of other circuit structures.

Abstract: Disclosed are a method and an apparatus for determining a multi-qubit measurement result, and a quantum computer. In the method, during determining multi-qubit measurement results, qubit readout feedback signals are first acquired for N associated qubits, then quantum state measurement values of the respective qubits are acquired based on the qubit readout feedback signals, and finally, measurement results of the N associated qubits are determined based on information weights of the respective qubits and the quantum state measurement values of the respective qubits.

Abstract: Disclosed are a quantum state information processing system, a quantum measurement and control system, and a quantum computer. In this system, a sampling module is used to perform sampling processing on an analog signal collected from a qubit, a frequency mixing module is used to perform mixing processing on the sampled signal, a demodulation module is used to perform demodulation processing on a mixed signal, and a determining module is used to perform state classification on a demodulated signal by using a state classification equation, so as to acquire quantum state information.

Abstract: A quantum circuit, a quantum chip, and a quantum computer. The quantum circuit includes qubits, adjacent qubits being coupled, and each of the qubits including: a first capacitor, a first end of the first capacitor being grounded; a second capacitor, a first end of the second capacitor and the first end of the first capacitor being commonly grounded; and a first device, including a first squid and a third capacitor that are connected in parallel, wherein parallel-connected first ends of the first squid and the third capacitor are connected to a second end of the first capacitor, and parallel-connected second ends of the first squid and the third capacitor are connected to a second end of the second capacitor. According to the present disclosure, parameters of at least one of a plurality of capacitors in a qubit circuit can be adjusted, so that the design of the capacitor is more flexible and less spatially limited, which facilitates design and layout of other circuit structures.

Abstract: A quantum computer architecture system, including: a quantum processor, including a plurality of qubits; a first integration apparatus configured to implement an execution signal and aggregation of execution results of a first quantity of qubits on the quantum processor; and a central control apparatus configured to acquire bit information of to-be-executed qubits on the quantum processor and to-be-executed information of each of the to-be-executed qubits, assign the to-be-executed information to one or more the first integration apparatuses according to the bit information and the first quantity, and receive the aggregation of the execution results from the one or more the first integration apparatuses. According to the present disclosure, integration and scalability of a quantum computer can be improved.

Abstract: Disclosed are a method and an apparatus for determining a measurement result of multiple qubits, and a quantum computer. The method comprises: separately acquiring, based on a sequence number of each to-be-read qubit, a readout feedback signal of a data bus corresponding to the to-be-read qubit; acquiring quantum state information of each to-be-read qubit based on the corresponding readout feedback signal; separately acquiring a quantum state measurement value of each to-be-read qubit based on the corresponding quantum state information and a readout criterion of the to-be-read qubit; and determining a measurement result target value of to-be-read qubits based on an information weight and the quantum state measurement value of each to-be-read qubit.

Abstract: Disclosed are a quantum topology graph optimization method, apparatus, terminal and storage medium, comprising: obtaining a first quantum topology graph of a target quantum algorithm, determining an intermediate node in the first quantum topology graph, and removing connecting lines between other graph nodes other than the intermediate node so as to obtain a second quantum topology graph without the crossed connecting lines; if not, updating the first quantum topology graph to a third quantum topology graph; determining an optimized sub-graph corresponding to one node to be optimized and composed of N child nodes connected by connecting lines according to a preset way, assigning connecting lines between non-optimized nodes and each child node so as to obtain a fourth quantum topology graph; restoring connecting lines between non-optimized nodes in the fourth quantum topology graph so as to obtain an optimized quantum topology graph.

Abstract: Disclosed are a method and an apparatus for determining a multi-qubit measurement result, and a quantum computer. In the method, during determining multi-qubit measurement results, qubit readout feedback signals are first acquired for N associated qubits, then quantum state measurement values of the respective qubits are acquired based on the qubit readout feedback signals, and finally, measurement results of the N associated qubits are determined based on information weights of the respective qubits and the quantum state measurement values of the respective qubits.

Abstract: The present disclosure discloses a method and apparatus for optimizing a qubit control signal, and a quantum computer. The method includes: obtaining an operating frequency of a qubit based on a Ramsey experiment; obtaining a detuning amount of a frequency of the qubit control signal based on an amplified phase error (APE) experiment, where the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the qubit control signal; and optimizing the qubit control signal based on the detuning amount of the frequency.

Abstract: Disclosed are a clock synchronization apparatus, a clock synchronization method, a quantum measurement and control system, and a quantum computer. The clock synchronization apparatus includes a benchmark clock, a first clock generator, function boards, and second clock generators. The first clock generator is in a communication connection to the second clock generators, and one corresponding second clock generator is disposed on each of the function boards. The benchmark clock provides a first benchmark clock signal to the first clock generator providing a synchronization signal used to synchronize output clocks of all the second clock generators to the second clock generators based on the first benchmark clock signal. The second clock generators output, based on the synchronization signal, a work clock signal required by the function boards. The plurality of function boards generate, based on the work clock signal, a first signal required to perform corresponding work by using qubits.

Abstract: The present disclosure discloses a method and apparatus for optimizing a qubit control signal, and a quantum computer. The method includes: obtaining an operating frequency of a qubit based on a Ramsey experiment; obtaining a detuning amount of a frequency of the qubit control signal based on an amplified phase error (APE) experiment, where the APE experiment is an experiment that measures a change in quantum state information of the qubit with a preset detuning amount of the frequency of the qubit control signal; and optimizing the qubit control signal based on the detuning amount of the frequency.

Abstract: A calibration method and a calibration apparatus for a delay of a quantum computer system, wherein when the calibration method is implemented, a first control signal is first applied to the qubit on the quantum chip through the first transmission line, simultaneously a second control signal with a preset delay is applied to the qubit through the second transmission line, then the preset delay is updated sequentially within a preset range, and the second control signal with updated preset delay is applied to the qubit, so as to obtain a change curve representing a probability of the quantum state of the qubit being an eigenstate as a function of the preset delay, and then it is determined whether the change curve has a trough, if the change curve has a trough, finally, delay calibration is performed for the first transmission line and the second transmission line based on the preset delay corresponding to the trough of the change curve, so as to eliminate the transmission delay caused by different line lengths

Abstract: A quantum measurement and control system and a quantum computer are disclosed.

Abstract: A calibration method and a calibration apparatus for a delay of a quantum computer system, wherein when the calibration method is implemented, a first control signal is first applied to the qubit on the quantum chip through the first transmission line, simultaneously a second control signal with a preset delay is applied to the qubit through the second transmission line, then the preset delay is updated sequentially within a preset range, and the second control signal with updated preset delay is applied to the qubit, so as to obtain a change curve representing a probability of the quantum state of the qubit being an eigenstate as a function of the preset delay, and then it is determined whether the change curve has a trough, if the change curve has a trough, finally, delay calibration is performed for the first transmission line and the second transmission line based on the preset delay corresponding to the trough of the change curve, so as to eliminate the transmission delay caused by different line lengths

Abstract: Disclosed are a quantum topology graph optimization method, apparatus, terminal and storage medium, comprising: obtaining a first quantum topology graph of a target quantum algorithm, determining an intermediate node in the first quantum topology graph, and removing connecting lines between other graph nodes other than the intermediate node so as to obtain a second quantum topology graph without the crossed connecting lines; if not, updating the first quantum topology graph to a third quantum topology graph; determining an optimized sub-graph corresponding to one node to be optimized and composed of N child nodes connected by connecting lines according to a preset way, assigning connecting lines between non-optimized nodes and each child node so as to obtain a fourth quantum topology graph; restoring connecting lines between non-optimized nodes in the fourth quantum topology graph so as to obtain an optimized quantum topology graph.

Abstract: Disclosed are a tunable coupler, a calibrating method and device for the tunable coupler, a quantum controlling system, and a readable storage medium. The calibrating method does not directly characterize the frequency of the tunable coupler. Instead, it biases magnetic flux of the tunable coupler (i.e., biasing voltage and pulse voltage) so as to complete calibration of the tunable coupler and obtain a work point of the tunable coupler where the effective coupling of the tunable coupler is off.

Abstract: Provided are a method for determining crosstalk of qubits, a quantum control system, and a quantum computer. The method includes: performing a Ramsey experiment on a first qubit, where between two X/2 quantum logic gates in the Ramsey experiment, first and second electrical signals are applied to first and second qubits, adjusting an amplitude of the second electrical signal for multiple times so that the second qubit causes a crosstalk effect on the first qubit, and acquiring a crosstalk coefficient of the second qubit to the first qubit by linearly fitting a relationship between an amplitude of the first electrical signal affected by crosstalk and the corresponding amplitude of the second electrical signal.