The present invention relates to an integrated photonic and quantum system carried out by the combination and interconnection of Programmable Photonics Processing Blocks, implemented over a photonic chip that is capable of implementing one or multiple, simultaneous quantum and classical circuits with optical feedback paths and/or linear multiport transformations, by the appropriate programming of its resources and the selection of its input and output ports. The invention also relates to a quantum field-programmable photonic gate array (Q-FPPGA) comprising at least one programmable circuit based on tunable beam-splitters with independent coupling and phase-shifting configuration and peripheral high-performance building blocks enabling classical and quantum operations.

The present invention relates to a photonic chip carried out by the combination and interconnection of equally-oriented Programmable Photonics Processing Blocks, with all their longitudinal axes in parallel, implemented over a photonic chip that is capable of implementing one or multiple, simultaneous photonics circuits with optical feedback paths and/or linear multiport transformations, by the appropriate programming of its resources and the selection of its input and output ports. The invention also relates to a parallel field-programmable photonic array (P-FPPA) comprising of, at least one programmable circuit based on equally-oriented/parallel tunable beam-splitters with independent coupling and phase-shifting configuration and peripheral high-performance building blocks.

The invention relates to a signal isolation and conversion circuit and a control apparatus. The signal isolation and conversion circuit comprises a pulse signal generating circuit and an optical coupling complementary isolation circuit connected with the pulse signal generating circuit; the pulse signal generating circuit is used for receiving an input signal and converting the input signal into a pulse signal; the optical coupling complementary isolation circuit comprises at least two photocouplers, and the at least two photocouplers are switched on or off according to the pulse signal so as to transmit the pulse signal to the output end of the signal isolation and conversion circuit. By arranging the optical coupling complementary isolation circuit, the problems of transmission delay, transmission signal distortion and light attenuation and temperature drift of the light-emitting diode in the optocoupler are effectively solved, the timeliness of isolation signal transmission is improved.

The invention relates to a signal isolation and conversion circuit and a control apparatus. The signal isolation and conversion circuit comprises a pulse signal generating circuit and an optical coupling complementary isolation circuit connected with the pulse signal generating circuit; the pulse signal generating circuit is used for receiving an input signal and converting the input signal into a pulse signal; the optical coupling complementary isolation circuit comprises at least two photocouplers, and the at least two photocouplers are switched on or off according to the pulse signal so as to transmit the pulse signal to the output end of the signal isolation and conversion circuit. By arranging the optical coupling complementary isolation circuit, the problems of transmission delay, transmission signal distortion and light attenuation and temperature drift of the light-emitting diode in the optocoupler are effectively solved, the timeliness of isolation signal transmission is improved.

The present disclosure relates to an overvoltage protection circuit and a charging device. A voltage applied to a PFC power supply on an input side is collected through an input voltage sampling circuit and an amplifier circuit, and a data processing capability of a charging management circuit is used to determine whether the applied voltage exceeds a preset voltage threshold. The preset voltage threshold refers to a voltage that is not greater than a minimum withstand voltage of an input device of the charger. The power factor correction power supply is controlled to operate to charge the battery to be charged when it is determined that the voltage applied does not exceed the preset voltage threshold, to prevent damage to the input device due to a connection to two phases of voltage.

The present disclosure relates to an overvoltage protection circuit and a charging device. A voltage applied to a PFC power supply on an input side is collected through an input voltage sampling circuit and an amplifier circuit, and a data processing capability of a charging management circuit is used to determine whether the applied voltage exceeds a preset voltage threshold. The preset voltage threshold refers to a voltage that is not greater than a minimum withstand voltage of an input device of the charger. The power factor correction power supply is controlled to operate to charge the battery to be charged when it is determined that the voltage applied does not exceed the preset voltage threshold, to prevent damage to the input device due to a connection to two phases of voltage.

A logic gate device comprising a probe structure having an interface contact, a first logic input for receiving a first light pulse having a first carrier-envelope phase that encodes an input state of the first logic input and a second logic input for receiving a second light pulse having a second carrier-envelope phase that encodes an input state of the second logic input. The probe structure is arranged to be irradiated by the first light pulse to generate a first current component within the probe structure that depends on the first carrier-envelope phase and to be irradiated by the second light pulse to generate a second current component within the probe structure that depends on the second carrier-envelope phase. The interface contact is arranged to output a sum current that comprises the first and second current component, wherein the sum current encodes a logic output state of a logic output.

The invention relates to a signal isolation and conversion circuit and a control apparatus. The signal isolation and conversion circuit comprises a pulse signal generating circuit and an optical coupling complementary isolation circuit connected with the pulse signal generating circuit; the pulse signal generating circuit is used for receiving an input signal and converting the input signal into a pulse signal; the optical coupling complementary isolation circuit comprises at least two photocouplers, and the at least two photocouplers are switched on or off according to the pulse signal so as to transmit the pulse signal to the output end of the signal isolation and conversion circuit. By arranging the optical coupling complementary isolation circuit, the problems of transmission delay, transmission signal distortion and light attenuation and temperature drift of the light-emitting diode in the optocoupler are effectively solved, the timeliness of isolation signal transmission is improved.

The invention relates to a signal isolation and conversion circuit and a control apparatus. The signal isolation and conversion circuit comprises a pulse signal generating circuit and an optical coupling complementary isolation circuit connected with the pulse signal generating circuit; the pulse signal generating circuit is used for receiving an input signal and converting the input signal into a pulse signal; the optical coupling complementary isolation circuit comprises at least two photocouplers, and the at least two photocouplers are switched on or off according to the pulse signal so as to transmit the pulse signal to the output end of the signal isolation and conversion circuit. By arranging the optical coupling complementary isolation circuit, the problems of transmission delay, transmission signal distortion and light attenuation and temperature drift of the light-emitting diode in the optocoupler are effectively solved, the timeliness of isolation signal transmission is improved.

The disclosure describes various aspects of a practical implementation of multi-qubit gate architecture. A method is described that includes enabling ions in the ion trap having three energy levels, enabling a low-heating rate motional mode (e.g., zig-zag mode) at a ground state of motion with the ions in the ion trap; and performing a Cirac and Zoller (CZ) protocol using the low-heating rate motional mode as a motional state of the CZ protocol and one of the energy levels as an auxiliary state of the CZ protocol, where performing the CZ protocol includes implementing the multi-qubit gate. The method also includes performing one or more algorithms using the multi-qubit gate, including Grover's algorithm, Shor's factoring algorithm, quantum approximation optimization algorithm (QAOA), error correction algorithms, and quantum and Hamiltonian simulations. A corresponding system that supports the implementation of a multi-qubit gate architecture is also described.