Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Database of semiconductor point-defect properties for applications in quantum technologies
V. Ivanov, A. Ivanov, J. Simoni +4 more·Mar 29, 2023
Solid-state point defects are attracting increasing attention in the field of quantum information science, because their localized states can act as a spin-photon interface in devices that store and transfer quantum information, which have been used ...
Scalable Heteronuclear Architecture of Neutral Atoms Based on EIT
A. Farouk, I. Beterov, Peng Xu +1 more·Mar 29, 2023
Based on our recent paper [arXiv:2206.12176 (2022)], we propose a scalable heteronuclear architecture of parallel implementation of CNOT gates in arrays of alkali-metal neutral atoms for quantum information processing. We considered a scheme where we...
Analyzing variational quantum landscapes with information content
Adri'an P'erez-Salinas, Hao Wang, Xavier Bonet-Monroig·Mar 29, 2023
The parameters of the quantum circuit in a variational quantum algorithm induce a landscape that contains the relevant information regarding its optimization hardness. In this work, we investigate such landscapes through the lens of information conte...
Trainable Variational Quantum-Multiblock ADMM Algorithm for Generation Scheduling
Reza Mahroo, A. Kargarian·Mar 28, 2023
The advent of quantum computing can potentially revolutionize how complex problems are solved. This paper proposes a two-loop quantum-classical solution algorithm for generation scheduling by infusing quantum computing, machine learning, and distribu...
Stabilization and Dissipative Information Transfer of a Superconducting Kerr-Cat Qubit
Ufuk Korkmaz, Deniz Türkpençe·Mar 28, 2023
Today, the competition to build a quantum computer continues, and the number of qubits in hardware is increasing rapidly. However, the quantum noise that comes with this process reduces the performance of algorithmic applications, so alternative ways...
All-photonic Gottesman-Kitaev-Preskill–qubit repeater using analog-information-assisted multiplexed entanglement ranking
F. Rozpędek, K. Seshadreesan, P. Polakos +2 more·Mar 27, 2023
Long distance quantum communication will require the use of quantum repeaters to overcome the exponential attenuation of signal with distance. One class of such repeaters utilizes quantum error correction to overcome losses in the communication chann...
Transversal diagonal logical operators for stabiliser codes
M. Webster, A. O. Quintavalle, S. Bartlett·Mar 27, 2023
Storing quantum information in a quantum error correction code can protect it from errors, but the ability to transform the stored quantum information in a fault tolerant way is equally important. Logical Pauli group operators can be implemented on C...
Stable computation of entanglement entropy for two-dimensional interacting fermion systems
Gaopei Pan, Yuan Da Liao, Weilun Jiang +3 more·Mar 25, 2023
There is no doubt that the information hidden in entanglement entropy (EE), for example, the $n$-th order R\'enyi EE, i.e., $S^{A}_n=\frac{1}{1-n}\ln \Tr (\rho_A^n)$ where $\rho_A=\mathrm{Tr}_{\overline{A}}\rho$ is the reduced density matrix, can be ...
Characterizing Crosstalk of Superconducting Transmon Processors
A. Ketterer, T. Wellens·Mar 24, 2023
Currently available quantum computing hardware based on superconducting transmon architectures realizes networks of hundreds of qubits with the possibility of controlled nearest-neighbor interactions. However, the inherent noise and decoherence effec...
Calculating the many-body density of states on a digital quantum computer
Alessandro Summer, Cecilia Chiaracane, M. Mitchison +1 more·Mar 23, 2023
Quantum statistical mechanics allows us to extract thermodynamic information from a microscopic description of a many-body system. A key step is the calculation of the density of states, from which the partition function and all finite-temperature eq...
Quantum search in a non-Markovian environment
Sheikh Parvez Mandal·Mar 23, 2023
This MS thesis explores the effects and origins of a 'noise with memory' in the dynamics of an open quantum system. The system considered here is a multi-qubit register performing the Grover's quantum search algorithm. We show that a Markovian-correl...
One-step implementation of a multi-target-qubit controlled-phase gate with photonic qubits encoded via eigenstates of the photon-number parity operator
Qi-Ping Su, Liang Bin, Yu Zhang +1 more·Mar 23, 2023
In recent years, quantum state engineering and quantum information processing using microwave fields and photons have received increasing attention. In addition, multiqubit gates play an important role in quantum information processing. In this work,...
Consistent Quantum Causes
R. Griffiths·Mar 23, 2023
Developing a quantum analog of the modern classical theory of causation, as formulated by Pearl and others using directed acyclic graphs, requires a theory of random or stochastic time development at the microscopic level, where the noncommutation of...
GSQAS: Graph Self-supervised Quantum Architecture Search
Zhimin He, Maijie Deng, Shenggen Zheng +2 more·Mar 22, 2023
Quantum Architecture Search (QAS) is a promising approach to designing quantum circuits for variational quantum algorithms (VQAs). However, existing QAS algorithms require to evaluate a large number of quantum circuits during the search process, whic...
Dissipative ground state preparation and the Dissipative Quantum Eigensolver
T. Cubitt·Mar 21, 2023
For any local Hamiltonian H, I construct a local CPT map and stopping condition which converges to the ground state subspace of H. Like any ground state preparation algorithm, this algorithm necessarily has exponential run-time in general (otherwise ...
Clifford-based Circuit Cutting for Quantum Simulation
Kaitlin N. Smith, M. Perlin, P. Gokhale +5 more·Mar 19, 2023
Quantum computing has potential to provide exponential speedups over classical computing for many important applications. However, today's quantum computers are in their early stages, and hardware quality issues hinder the scale of program execution....
Analyses of the viability of automating the quantum circuit construction of Grover Oracle for executing wildcard searches on NISQ processors
William W. Huang·Mar 14, 2023
Using Grover algorithm, this work investigates a technique for encoding search phrases used in wildcard searches. The technique involves creating a phase Oracle that loads data into a quantum circuit together with the search terms that have been enco...
Direct tomography of quantum states and processes via weak measurements of Pauli spin operators on an NMR quantum processor
Akshay Gaikwad, Gayatri Singh, K. Dorai +1 more·Mar 13, 2023
In this paper, we present an efficient weak measurement-based scheme for direct quantum state tomography (DQST) and direct quantum process tomography (DQPT) and experimentally implement it on an NMR ensemble quantum information processor without invo...
Fermionic quantum processing with programmable neutral atom arrays
Daniel Gonz'alez-Cuadra, D. Bluvstein, M. Kalinowski +10 more·Mar 13, 2023
Significance Neutral atoms trapped in tweezer arrays have recently emerged as powerful quantum simulation platforms, with recent experiments targeting quantum spin models. In this work, we envision the next generation of programmable atomic quantum s...
Protecting classical-quantum signals in free-space optical channels
E. Villaseñor, M. Winnel, T. Ralph +3 more·Mar 12, 2023
Due to turbulence and tracking errors, free-space optical channels involving mobile transceivers are characterized by a signal's partial loss or complete erasure. This work presents an error correction protocol capable of protecting a signal passing ...