Quantum

Paper

BosonSampling.jl: A Julia package for quantum multi-photon interferometry

Benoit Seron and Antoine Restivo,

Quantum 8, 1378 (2024).

We present a free open source package for high performance simulation and numerical investigation of boson samplers and, more generally, multi-photon interferometry. Our package is written i…

Paper

A distribution testing oracle separation between QMA and QCMA

Anand Natarajan and Chinmay Nirkhe,

Quantum 8, 1377 (2024).

It is a long-standing open question in quantum complexity theory whether the definition of $non-deterministic$ quantum computation requires quantum witnesses (QMA) or if classical witnesses su…

Paper

Improving social welfare in non-cooperative games with different types of quantum resources

Alastair A. Abbott, Mehdi Mhalla, and Pierre Pocreau,

Quantum 8, 1376 (2024).

We investigate what quantum advantages can be obtained in multipartite non-cooperative games by studying how different types of quantum resources can lead to new Nash equilibria and improve…

Paper

Trading T gates for dirty qubits in state preparation and unitary synthesis

Guang Hao Low, Vadym Kliuchnikov, and Luke Schaeffer,

Quantum 8, 1375 (2024).

Efficient synthesis of arbitrary quantum states and unitaries from a universal fault-tolerant gate-set e.g. Clifford+T is a key subroutine in quantum computation. As large quantum algorithms…

Paper

Variational Quantum Algorithms for Semidefinite Programming

Dhrumil Patel, Patrick J. Coles, and Mark M. Wilde,

Quantum 8, 1374 (2024).

A semidefinite program (SDP) is a particular kind of convex optimization problem with applications in operations research, combinatorial optimization, quantum information science, and beyond…

Paper

Sample-optimal classical shadows for pure states

Daniel Grier, Hakop Pashayan, and Luke Schaeffer,

Quantum 8, 1373 (2024).

We consider the classical shadows task for pure states in the setting of both joint and independent measurements. The task is to measure few copies of an unknown pure state $\rho$ in order to…

Paper

Fold-Transversal Clifford Gates for Quantum Codes

Nikolas P. Breuckmann and Simon Burton,

Quantum 8, 1372 (2024).

We generalize the concept of folding from surface codes to CSS codes by considering certain dualities within them. In particular, this gives a general method to implement logical operations…

Paper

Accelerating Quantum Computations of Chemistry Through Regularized Compressed Double Factorization

Oumarou Oumarou, Maximilian Scheurer, Robert M. Parrish, Edward G. Hohenstein, and Christian Gogolin,

Quantum 8, 1371 (2024).

We propose the regularized compressed double factorization (RC-DF) method to classically compute compressed representations of molecular Hamiltonians that enable efficient simulation with no…

Paper

On Groups in the Qubit Clifford Hierarchy

Jonas T. Anderson,

Quantum 8, 1370 (2024).

Here we study the unitary groups that can be constructed using elements from the qubit Clifford Hierarchy. We first provide a necessary and sufficient canonical form that semi-Clifford and g…

Paper

Quantum algorithm for time-dependent differential equations using Dyson series

Dominic W. Berry and Pedro C. S. Costa,

Quantum 8, 1369 (2024).

Time-dependent linear differential equations are a common type of problem that needs to be solved in classical physics. Here we provide a quantum algorithm for solving time-dependent linear…

Paper

Complete Characterization of Entanglement Embezzlement

Elia Zanoni, Thomas Theurer, and Gilad Gour,

Quantum 8, 1368 (2024).

Using local operations and classical communication (LOCC), entanglement can be manipulated but not created. However, entanglement can be $embezzled$. In this work, we completely characterize u…

Paper

Estimating Coherent Contributions to the Error Profile Using Cycle Error Reconstruction

Arnaud Carignan-Dugas, Shashank Kumar Ranu, and Patrick Dreher,

Quantum 8, 1367 (2024).

Mitigation and calibration schemes are central to maximize the computational reach of today's Noisy Intermediate Scale Quantum (NISQ) hardware, but these schemes are often specialized to exc…

Paper

Schrödinger as a Quantum Programmer: Estimating Entanglement via Steering

Aby Philip, Soorya Rethinasamy, Vincent Russo, and Mark M. Wilde,

Quantum 8, 1366 (2024).

Quantifying entanglement is an important task by which the resourcefulness of a quantum state can be measured. Here, we develop a quantum algorithm that tests for and quantifies the separabi…

Paper

Quantum Phase Transitions in periodically quenched systems

Á. Sáiz, J. Khalouf-Rivera, J. M. Arias, P. Pérez-Fernández, and J. Casado-Pascual,

Quantum 8, 1365 (2024).

Quantum phase transitions encompass a variety of phenomena that occur in quantum systems exhibiting several possible symmetries. Traditionally, these transitions are explored by continuously…

Paper

TensorKrowch: Smooth integration of tensor networks in machine learning

José Ramón Pareja Monturiol, David Pérez-García, and Alejandro Pozas-Kerstjens,

Quantum 8, 1364 (2024).

Tensor networks are factorizations of high-dimensional tensors into networks of smaller tensors. They have applications in physics and mathematics, and recently have been proposed as promisi…

Paper

Covariant operator bases for continuous variables

A. Z. Goldberg, A. B. Klimov, G. Leuchs, and L. L. Sanchez-Soto,

Quantum 8, 1363 (2024).

Coherent-state representations are a standard tool to deal with continuous-variable systems, as they allow one to efficiently visualize quantum states in phase space. Here, we work out an al…

Category: Paper