Abstract: A secured mutual confirmation method for tracing and verifying product identity, origin and authentication may comprise at least a seller and at least a buyer, and a series of transactions between the seller and the buyer that can be realized in an online system. The transactions comprise purchase order (PO), real shipment (RS) and shipment confirmation (SC), and one block comprising a set of PO, RS and SC is configured to be registered by a concept of blockchain. In the present invention, all processes of the transactions in the system between the seller and the buyer are monitored and the messages therebetween are encrypted, which makes the online transaction more secured and reliable for both the seller and the buyer.

Abstract: A method of qubits, a room temperature quantum computing and a system including a controller, a readout, a resistor and a storage are disclosed. The shape and area of each qubits and the pattern of qubit array may be defined by a pattern on a mask simultaneously to control correlations among qubits. The configuration of qubit correlation may be designed three-dimensionally by stacking layers including arrays of qubits. The external generator may be included in another layer stacked with the layers including the arrays of qubits. The qubit may comprise a band structure having a spin-less ground state and a first excited state with spin. The first excited state may not be split for a retention time even under the external field which can influence a spin. The configuration of qubit correlations may be tuned by considering this retention time and an error correction code in quantum computation.

Abstract: A secured mutual confirmation method for tracing and verifying product identity, origin and authentication may comprise at least a seller and at least a buyer, and a series of transactions between the seller and the buyer that can be realized in an online system. The transactions comprise purchase order (PO), real shipment (RS) and shipment confirmation (SC), and one block comprising a set of PO, RS and SC is configured to be registered by a concept of blockchain. In the present invention, all processes of the transactions in the system between the seller and the buyer are monitored and the messages therebetween are encrypted, which makes the online transaction more secured and reliable for both the seller and the buyer.

Abstract: A method of secure erase of an electronic device that applies a predetermined voltage to a device. The voltage is selected to be high enough to quickly destroy all data cells of the electronic device, but not high enough to destroy lines to the data cells of the electronic device. Accordingly, since the voltage is too low to destroy the word or bit lines, the predetermined voltage is applied to every data cell using the word or bit lines such that all data is removed. The present invention has the advantage of quickly, reliably, and permanently removing all of the data from the electronic device. The predetermined high voltage can differ for different types of SSDs.

Abstract: An apparatus that features an optical fiber with a core surrounded by a cladding, wherein at least one of the core and the cladding has a reduced thickness along an interval of the fiber to enlarge a modal field diameter of the guided mode in the fiber. A control layer is disposed on an external surface of the cladding along the interval. The control layer exhibits a strong change in its index of refraction as a function of temperature. The apparatus further includes a heating/cooling element and a controller to change the temperature of the control layer to more than two different levels, responsive to more than two different, corresponding attenuation settings for an optical signal to be guided by the fiber. In another embodiment of the invention, a coreless optical fiber is fused to the cladding of the optical fiber at the interval to achieve a flat wavelength response behavior.