In quantum computing, it is known that the devices that perform quantum computations are known as quantum computers. This chapter describes the multiple-valued programmable logic devices in quantum computing. There are hundreds of similar logic blocks available onto the multi-valued Quantum Field Programmable Gate Array (FPGA) connected via routing resources. A multi-valued Quantum functional block (FB) is the basic repeating logic block on a multi-valued Quantum CPLD. Further, the switch matrix in a multi-valued Quantum CPLD may or may not be fully connected. The complexity of a typical PAL device is around a few hundred logic gates whereas the complexity of multi-valued Quantum CPLD is around tens of thousands of logic gates. Further, due to low power consumption and low cost, multi-valued Quantum CPLDs are mostly used for battery-operated portable applications such as mobile phones, digital assistants, etc. Multi-Valued quantum CPLD functional block is designed by connecting Flip-Flops, Logic function and Multiplexers.In quantum computing, it is known that the devices that perform quantum computations are known as quantum computers. This chapter describes the multiple-valued programmable logic devices in quantum computing. There are hundreds of similar logic blocks available onto the multi-valued Quantum Field Programmable Gate Array (FPGA) connected via routing resources. A multi-valued Quantum functional block (FB) is the basic repeating logic block on a multi-valued Quantum CPLD. Further, the switch matrix in a multi-valued Quantum CPLD may or may not be fully connected. The complexity of a typical PAL device is around a few hundred logic gates whereas the complexity of multi-valued Quantum CPLD is around tens of thousands of logic gates. Further, due to low power consumption and low cost, multi-valued Quantum CPLDs are mostly used for battery-operated portable applications such as mobile phones, digital assistants, etc. Multi-Valued quantum CPLD functional block is designed by connecting Flip-Flops, Logic function and Multiplexers.

CRC Press eBooksAug 29, 20230 citations

Opening the gate to quantum computation

Anonymous

PhysicsJan 19, 20100 citations

Programmable all-to-all entangling gates for cavity-coupled atoms

Angus Crookes, Ben Yuen, Angela Demetriadou

Fault tolerant quantum computers greatly benefit from having both high fidelity entangling gates and a non-local qubit connectivity. However, most entangling gates for neutral atoms are local, requiring separated atoms to be moved using optical tweezers to yield entanglement between them. Here, we design a high fidelity Mølmer Sørensen-like entangling gate between neutral atoms coupled to a photonic cavity, enabling a programmable all-to-all connectivity through the shared cavity coupling. The gate is both robust to changes in cavity photon number, and enables selective entanglement between any subset of separated atoms through local laser addressing. This eliminates the need to physically move atoms to perform the gate, and therefore motional errors and erasure are suppressed. Using experimentally realistic parameters we demonstrate gate fidelities exceeding $F > 0.99$ , with higher fidelities achievable through optimal control of the pump amplitudes.Fault tolerant quantum computers greatly benefit from having both high fidelity entangling gates and a non-local qubit connectivity. However, most entangling gates for neutral atoms are local, requiring separated atoms to be moved using optical tweezers to yield entanglement between them. Here, we design a high fidelity Mølmer Sørensen-like entangling gate between neutral atoms coupled to a photonic cavity, enabling a programmable all-to-all connectivity through the shared cavity coupling. The gate is both robust to changes in cavity photon number, and enables selective entanglement between any subset of separated atoms through local laser addressing. This eliminates the need to physically move atoms to perform the gate, and therefore motional errors and erasure are suppressed. Using experimentally realistic parameters we demonstrate gate fidelities exceeding $F > 0.99$, with higher fidelities achievable through optimal control of the pump amplitudes.

quant-pharXiv:2610.22220Oct 16, 20260 citations

Programmable quantum processor implemented with superconducting circuit

Nian-Quan Jiang, Xi Liang, Mingfeng Wang

Abstract A quantum processor might execute certain computational tasks exponentially faster than a classical processor. Here, using superconducting quantum circuits we design a powerful universal quantum processor with the structure of symmetric all-to-all capacitive connection. We present the Hamiltonian and use it to demonstrate a full set of qubit operations needed in the programmable universal quantum computations. With the device the unwanted crosstalk and ZZ -type couplings between qubits can be effectively suppressed by tuning gate voltages, and the design allows efficient and high-quality couplings of qubits. Within available technology, the scheme may enable a practical programmable universal quantum computer.Abstract A quantum processor might execute certain computational tasks exponentially faster than a classical processor. Here, using superconducting quantum circuits we design a powerful universal quantum processor with the structure of symmetric all-to-all capacitive connection. We present the Hamiltonian and use it to demonstrate a full set of qubit operations needed in the programmable universal quantum computations. With the device the unwanted crosstalk and ZZ -type couplings between qubits can be effectively suppressed by tuning gate voltages, and the design allows efficient and high-quality couplings of qubits. Within available technology, the scheme may enable a practical programmable universal quantum computer.

Communications in Theoretical PhysicsFeb 10, 20211 citation

Q-Pilot: Field Programmable Qubit Array Compilation with Flying Ancillas

Hanrui Wang, Daniel Bochen Tan, Pengyu Liu +4 more

Neutral atom arrays, particularly the reconfigurable field programmable qubit arrays (FPQA) with atom movement, show strong promise for quantum computing. FPQA has a dynamic qubit connectivity, facilitating cost-effective execution of long-range gates, but it also poses new challenges in the compilation. Inspired by the FPGA compilation strategy, we develop a router, Q-Pilot, that leverages flying ancillas to implement 2-Q gates between data qubits mapped to fixed atoms. Equipped with domain-specific routing techniques, Q-Pilot achieves 1.4×, 27.7×, and 6.7× reductions in circuit depth for 100-qubit random, quantum simulation, and QAOA circuits, respectively, compared to alternative fixed atom array architectures.Neutral atom arrays, particularly the reconfigurable field programmable qubit arrays (FPQA) with atom movement, show strong promise for quantum computing. FPQA has a dynamic qubit connectivity, facilitating cost-effective execution of long-range gates, but it also poses new challenges in the compilation. Inspired by the FPGA compilation strategy, we develop a router, Q-Pilot, that leverages flying ancillas to implement 2-Q gates between data qubits mapped to fixed atoms. Equipped with domain-specific routing techniques, Q-Pilot achieves 1.4×, 27.7×, and 6.7× reductions in circuit depth for 100-qubit random, quantum simulation, and QAOA circuits, respectively, compared to alternative fixed atom array architectures.

arXiv:2311.16190ACM/IEEE Design Automation Conference (DAC)Jun 23, 202419 citations

F > 0.99

, with higher fidelities achievable through optimal control of the pump amplitudes.