Quantum

Paper

Quantum Deep Hedging

El Amine Cherrat, Snehal Raj, Iordanis Kerenidis, Abhishek Shekhar, Ben Wood, Jon Dee, Shouvanik Chakrabarti, Richard Chen, Dylan Herman, Shaohan Hu, Pierre Minssen, Ruslan Shaydulin, Yue Sun, Romina Yalovetzky, and Marco Pistoia,

Quantum 7, 1191 (2023).

Quantum machine learning has the potential for a transformative impact across industry sectors and in particular in finance. In our work we look at the problem of hedging where deep reinforc…

Paper

Energy measurements remain thermometrically optimal beyond weak coupling

Jonas Glatthard, Karen V. Hovhannisyan, Martí Perarnau-Llobet, Luis A. Correa, and Harry J. D. Miller,

Quantum 7, 1190 (2023).

We develop a general perturbative theory of finite-coupling quantum thermometry up to second order in probe-sample interaction. By assumption, the probe and sample are in thermal equilibrium…

Paper

Efficient classical algorithms for simulating symmetric quantum systems

Eric R. Anschuetz, Andreas Bauer, Bobak T. Kiani, and Seth Lloyd,

Quantum 7, 1189 (2023).

In light of recently proposed quantum algorithms that incorporate symmetries in the hope of quantum advantage, we show that with symmetries that are restrictive enough, classical algorithms…

Paper

Variational Quantum Linear Solver

Carlos Bravo-Prieto, Ryan LaRose, M. Cerezo, Yigit Subasi, Lukasz Cincio, and Patrick J. Coles,

Quantum 7, 1188 (2023).

Previously proposed quantum algorithms for solving linear systems of equations cannot be implemented in the near term due to the required circuit depth. Here, we propose a hybrid quantum-cla…

Paper

Solve single photon detector problems

Hao Shu,

Quantum 7, 1187 (2023).

Single photon detector(SPD) problems arise in most quantum tasks, especially for measuring states going through high-lost channels. They are particularly prominent in quantum key distributio…

Paper

NISQ-compatible approximate quantum algorithm for unconstrained and constrained discrete optimization

M. R. Perelshtein, A. I. Pakhomchik, Ar. A. Melnikov, M. Podobrii, A. Termanova, I. Kreidich, B. Nuriev, S. Iudin, C. W. Mansell, and V. M. Vinokur,

Quantum 7, 1186 (2023).

Quantum algorithms are getting extremely popular due to their potential to significantly outperform classical algorithms. Yet, applying quantum algorithms to optimization problems meets chal…

Paper

Abstraqt: Analysis of Quantum Circuits via Abstract Stabilizer Simulation

Benjamin Bichsel, Anouk Paradis, Maximilian Baader, and Martin Vechev,

Quantum 7, 1185 (2023).

Stabilizer simulation can efficiently simulate an important class of quantum circuits consisting exclusively of Clifford gates. However, all existing extensions of this simulation to arbitra…

Paper

Synergetic quantum error mitigation by randomized compiling and zero-noise extrapolation for the variational quantum eigensolver

Tomochika Kurita, Hammam Qassim, Masatoshi Ishii, Hirotaka Oshima, Shintaro Sato, and Joseph Emerson,

Quantum 7, 1184 (2023).

We propose a quantum error mitigation strategy for the variational quantum eigensolver (VQE) algorithm. We find, via numerical simulation, that very small amounts of coherent noise in VQE ca…

Paper

Actis: A Strictly Local Union–Find Decoder

Tim Chan and Simon C. Benjamin,

Quantum 7, 1183 (2023).

Fault-tolerant quantum computing requires classical hardware to perform the decoding necessary for error correction. The Union–Find decoder is one of the best candidates for this. It has rem…

Paper

Bounding the Minimum Time of a Quantum Measurement

Nathan Shettell, Federico Centrone, and Luis Pedro García-Pintos,

Quantum 7, 1182 (2023).

Measurements take a singular role in quantum theory. While they are often idealized as an instantaneous process, this is in conflict with all other physical processes in nature. In this Lett…

Paper

Composite Quantum Simulations

Matthew Hagan and Nathan Wiebe,

Quantum 7, 1181 (2023).

In this paper we provide a framework for combining multiple quantum simulation methods, such as Trotter-Suzuki formulas and QDrift into a single Composite channel that builds upon older coal…

Paper

An Improved Approximation Algorithm for Quantum Max-Cut on Triangle-Free Graphs

Robbie King,

Quantum 7, 1180 (2023).

We give an approximation algorithm for Quantum Max-Cut which works by rounding an SDP relaxation to an entangled quantum state. The SDP is used to choose the parameters of a variational quan…

Paper

A relativistic discrete spacetime formulation of 3+1 QED

Nathanaël Eon, Giuseppe Di Molfetta, Giuseppe Magnifico, and Pablo Arrighi,

Quantum 7, 1179 (2023).

This work provides a relativistic, digital quantum simulation scheme for both $2+1$ and $3+1$ dimensional quantum electrodynamics (QED), based on a discrete spacetime formulation of theory. It t…

Paper

Tamper Detection against Unitary Operators

Naresh Goud Boddu and Upendra Kapshikar,

Quantum 7, 1178 (2023).

Security of a storage device against a tampering adversary has been a well-studied topic in classical cryptography. Such models give black-box access to an adversary, and the aim is to prote…

Paper

Enhanced Gravitational Entanglement via Modulated Optomechanics

A. Douglas K. Plato, Dennis Rätzel, and Chuanqi Wan,

Quantum 7, 1177 (2023).

The role of entanglement in determining the non-classicality of a given interaction has gained significant traction over the last few years. In particular, as the basis for new experimental…

Paper

Quantum Circuit Compiler for a Shuttling-Based Trapped-Ion Quantum Computer

Fabian Kreppel, Christian Melzer, Diego Olvera Millán, Janis Wagner, Janine Hilder, Ulrich Poschinger, Ferdinand Schmidt-Kaler, and André Brinkmann,

Quantum 7, 1176 (2023).

The increasing capabilities of quantum computing hardware and the challenge of realizing deep quantum circuits require fully automated and efficient tools for compiling quantum circuits. To…

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