Category: Paper

Prithviraj Prabhu and Ben W. Reichardt,

Quantum 7, 1154 (2023).

We reduce the extra qubits needed for two fault-tolerant quantum computing protocols: error correction, specifically syndrome bit measurement, and cat state preparation. For distance-three f…

Armanda O. Quintavalle, Paul Webster, and Michael Vasmer,

Quantum 7, 1153 (2023).

The promise of high-rate low-density parity check (LDPC) codes to substantially reduce the overhead of fault-tolerant quantum computation depends on constructing efficient, fault-tolerant im…

Guillem Müller-Rigat, Anubhav Kumar Srivastava, Stanisław Kurdziałek, Grzegorz Rajchel-Mieldzioć, Maciej Lewenstein, and Irénée Frérot,

Quantum 7, 1152 (2023).

We introduce a semidefinite programming algorithm to find the minimal quantum Fisher information compatible with an arbitrary dataset of mean values. This certification task allows one to qu…

Bo Lu, Yong-Pan Gao, Kai Wen, and Chuan Wang,

Quantum 7, 1151 (2023).

Spiking neural network is a kind of neuromorphic computing that is believed to improve the level of intelligence and provide advantages for quantum computing. In this work, we address this i…

Peter Sidajaya, Aloysius Dewen Lim, Baichu Yu, and Valerio Scarani,

Quantum 7, 1150 (2023).

Bell's theorem states that Local Hidden Variables (LHVs) cannot fully explain the statistics of measurements on some entangled quantum states. It is natural to ask how much supplementary cla…

Martin J. Renner and Marco Túlio Quintino,

Quantum 7, 1149 (2023).

We analyze the amount of classical communication required to reproduce the statistics of local projective measurements on a general pair of entangled qubits,…

Jinglei Zhang, Ryan Ferguson, Stefan Kühn, Jan F. Haase, C.M. Wilson, Karl Jansen, and Christine A. Muschik,

Quantum 7, 1148 (2023).

Quantum-enhanced computing methods are promising candidates to solve currently intractable problems. We consider here a variational quantum eigensolver (VQE), that delegates costly state pre…

Mitchell Chiew and Sergii Strelchuk,

Quantum 7, 1145 (2023).

Simulating fermionic systems on a quantum computer requires a high-performing mapping of fermionic states to qubits. A characteristic of an efficient mapping is its ability to translate loca…

N.A. Asriyan, A.A. Elistratov, and Yu. E. Lozovik,

Quantum 7, 1144 (2023).

Bose-condensation in a system of 2D quasiparticles is considered in the scope of a microscopic model. Mean-field dynamical equations are derived with the help of the Schwinger-Keldysh formal…

Géza Tóth and József Pitrik,

Quantum 7, 1143 (2023).

We define the quantum Wasserstein distance such that the optimization of the coupling is carried out over bipartite separable states rather than bipartite quantum states in general, and exam…

Thomas D. Galley, Flaminia Giacomini, and John H. Selby,

Quantum 7, 1142 (2023).

When gravity is sourced by a quantum system, there is tension between its role as the mediator of a fundamental interaction, which is expected to acquire nonclassical features, and its role…

Xiaoqin Gao, Paul Appel, Nicolai Friis, Martin Ringbauer, and Marcus Huber,

Quantum 7, 1141 (2023).

Gate-based universal quantum computation is formulated in terms of two types of operations: local single-qubit gates, which are typically easily implementable, and two-qubit entangling gates…

Torsten V. Zache, Daniel González-Cuadra, and Peter Zoller,

Quantum 7, 1140 (2023).

Simulating the real-time dynamics of lattice gauge theories, underlying the Standard Model of particle physics, is a notoriously difficult problem where quantum simulators can provide a prac…