IEEE Transactions on Quantum Engineering -

Design and Analysis of Digital Communication Within an SoC-Based Control System for Trapped-Ion Quantum Computing

March 31, 2023Nafis IrtijaEnabling TechnologiesControl systems, Hardware, Logic gates, Quantum computing, Qubit, Radio frequency, Throughput

Large-scale quantum information processing requires the use of quantum error-correcting codes to mitigate the effects of noise in quantum devices. Topological error-correcting codes, such as surface codes, are promising candidates, as they can be implemented using only local interactions in a 2-D array of physical qubits. Procedures, such as defect braiding and lattice surgery, can […]

Variational Quantum Optimization of Nonlocality in Noisy Quantum Networks

March 31, 2023Brian DoolittleQuantum Networking & CommunicationsHardware, Integrated circuit modeling, Noise measurement, Optimization, Quantum entanglement, Quantum networks, Qubit

The noise and complexity inherent to quantum communication networks leads to technical challenges in designing quantum network protocols using classical methods. We address this issue with a hybrid variational quantum optimization (VQO) framework that simulates quantum networks on quantum hardware and optimizes the simulation using differential programming. We maximize nonlocality in noisy quantum networks to […]

Hardness of Braided Quantum Circuit Optimization in the Surface Code

March 30, 2023Kunihiro WasaQuantum ComputingFault tolerance, Fault tolerant systems, Lattices, Logic gates, Optimization, Quantum circuit, Qubit

Perfect and Quasi-Perfect Codes for the Bosonic Classical-Quantum Channel

March 30, 2023Andreu Blasco CollQuantum InformationCodes, Eigenvalues and eigenfunctions, Error probability, Indexes, Quantum channels, Quantum state, Testing

In this article, we explore perfect and quasi-perfect codes for the Bosonic channel, where information is generated by a laser and conveyed in the form of coherent states. In particular, we consider the phase-modulation codebook for coherent states in a Bosonic channel. We show that these phase-modulation codes are quasi-perfect as long as the cardinality […]

Fundamentals of Quantum Fourier Optics

March 30, 2023Mohammad RezaiQuantum InformationHolography, Optical imaging, Optical signal processing, Optics, Photonics, Quantum computing, Quantum state

All-quantum signal processing techniques are at the core of the successful advancement of most information-based quantum technologies. This article develops coherent and comprehensive methodologies and mathematical models to describe Fourier optical signal processing in full quantum terms for any input quantum state of light. We begin this article by introducing a spatially 2-D quantum state […]

On the Logical Error Rate of Sparse Quantum Codes

November 2, 2022Patricio FuentesOpen Access, Quantum InformationCodes, Decoding, Error analysis, Generators, Measurement, Qubit, Tensors

The quantum paradigm presents a phenomenon known as degeneracy that can potentially improve the performance of quantum error correcting codes. However, the effects of this mechanism are sometimes ignored when evaluating the performance of sparse quantum codes and the logical error rate is not always correctly reported. In this article, we discuss previously existing methods […]

A Feasible Quantum Sealed-Bid Auction Scheme Without an Auctioneer

November 2, 2022Run-Hua ShiOpen Access, Quantum InformationAtmospheric measurements, Cryptography, Particle measurements, Privacy, Protocols, Quantum computing, Resists

In this article, we first define a primitive problem of secure multiparty computations, i.e., secure multiparty disjunction (SMD), and present a novel quantum protocol for SMD that can ensure information-theoretical security, i.e., unconditional security. Furthermore, based on the quantum SMD protocol, we design a quantum sealed-bid auction (QSA) scheme without an auctioneer. In the proposed […]

Discriminating Quantum States in the Presence of a Deutschian CTC: A Simulation Analysis

November 2, 2022Leonardo BacciottiniOpen Access, Quantum Information

In an article published in 2009, Brun et al. proved that in the presence of a “Deutschian” closed timelike curve, one can map K distinct nonorthogonal states (hereafter, input set) to the standard orthonormal basis of a K -dimensional state space. To implement this result, the authors proposed a quantum circuit that includes, among SWAP gates, a fixed set […]

Pauli Error Propagation-Based Gate Rescheduling for Quantum Circuit Error Mitigation

November 2, 2022Vedika SaravananOpen Access, Quantum SoftwareComputers, Error analysis, Logic gates, Noise measurement, Quantum circuit, Quantum computing, Qubit

Noisy intermediate-scale quantum algorithms, which run on noisy quantum computers, should be carefully designed to boost the output state fidelity. While several compilation approaches have been proposed to minimize circuit errors, they often omit the detailed circuit structure information that does not affect the circuit depth or the gate count. In the presence of spatial […]

Simultaneous Execution of Quantum Circuits on Current and Near-Future NISQ Systems

November 2, 2022Yasuhiro OhkuraOpen Access, Quantum SoftwareCloud computing, Crosstalk, Program processors, Quantum circuit, Quantum computing, Qubit, Throughput

In the noisy intermediate-scale quantum (NISQ) era, the idea of quantum multiprogramming , running multiple quantum circuits (QCs) simultaneously on the same hardware, helps to improve the throughput of quantum computation. However, the crosstalk, unwanted interference between qubits on NISQ processors, may cause performance degradation when using multiprogramming. To address this challenge, we introduce palloq […]