Quantum

Paper

A device-independent protocol for XOR oblivious transfer

Srijita Kundu, Jamie Sikora, and Ernest Y.-Z. Tan,

Quantum 6, 725 (2022).

Oblivious transfer is a cryptographic primitive where Alice has two bits and Bob wishes to learn some function of them. Ideally, Alice should not learn Bob's desired function choice and Bob…

Paper

One-Shot Hybrid State Redistribution

Eyuri Wakakuwa, Yoshifumi Nakata, and Min-Hsiu Hsieh,

Quantum 6, 724 (2022).

We consider state redistribution of a "hybrid" information source that has both classical and quantum components. The sender transmits classical and quantum information at the same time to t…

Paper

Universal Entanglement Transitions of Free Fermions with Long-range Non-unitary Dynamics

Pengfei Zhang, Chunxiao Liu, Shao-Kai Jian, and Xiao Chen,

Quantum 6, 723 (2022).

Non-unitary evolution can give rise to novel steady states classified by their entanglement properties. In this work, we aim to understand the effect of long-range hopping that decays with…

Paper

Metrology-assisted entanglement distribution in noisy quantum networks

Simon Morelli, David Sauerwein, Michalis Skotiniotis, and Nicolai Friis,

Quantum 6, 722 (2022).

We consider the distribution of high-dimensional entangled states to multiple parties via noisy channels and the subsequent probabilistic conversion of these states to desired target states…

Paper

Numerical Implementation of Just-In-Time Decoding in Novel Lattice Slices Through the Three-Dimensional Surface Code

T. R. Scruby, D. E. Browne, P. Webster, and M. Vasmer,

Quantum 6, 721 (2022).

We build on recent work by B. Brown (Sci. Adv. 6, eaay4929 (2020)) to develop and simulate an explicit recipe for a just-in-time decoding scheme in three 3D surface codes, which can be used…

Paper

Quantum agents in the Gym: a variational quantum algorithm for deep Q-learning

Andrea Skolik, Sofiene Jerbi, and Vedran Dunjko,

Quantum 6, 720 (2022).

Quantum machine learning (QML) has been identified as one of the key fields that could reap advantages from near-term quantum devices, next to optimization and quantum chemistry. Research in…

Paper

Analytical framework for non-equilibrium phase transition to Bose–Einstein condensate

V. Yu. Shishkov, E. S. Andrianov, and Yu. E. Lozovik,

Quantum 6, 719 (2022).

The theoretical description of non-equilibrium Bose–Einstein condensate (BEC) is one of the main challenges in modern statistical physics and kinetics. The non-equilibrium nature of BEC make…

Paper

Receiver-Device-Independent Quantum Key Distribution

Marie Ioannou, Maria Ana Pereira, Davide Rusca, Fadri Grünenfelder, Alberto Boaron, Matthieu Perrenoud, Alastair A. Abbott, Pavel Sekatski, Jean-Daniel Bancal, Nicolas Maring, Hugo Zbinden, and Nicolas Brunner,

Quantum 6, 718 (2022).

We present protocols for quantum key distribution in a prepare-and-measure setup with an asymmetric level of trust. While the device of the sender (Alice) is partially characterized, the rec…

Paper

Quantum Bell inequalities from Information Causality – tight for Macroscopic Locality

Mariami Gachechiladze, Bartłomiej Bąk, Marcin Pawłowski, and Nikolai Miklin,

Quantum 6, 717 (2022).

In a Bell test, the set of observed probability distributions complying with the principle of local realism is fully characterized by Bell inequalities. Quantum theory allows for a violation…

Paper

Robust certification of arbitrary outcome quantum measurements from temporal correlations

Debarshi Das, Ananda G. Maity, Debashis Saha, and A. S. Majumdar,

Quantum 6, 716 (2022).

Certification of quantum devices received from unknown providers is a primary requirement before utilizing the devices for any information processing task. Here, we establish a protocol for…

Paper

Enumerating all bilocal Clifford distillation protocols through symmetry reduction

Sarah Jansen, Kenneth Goodenough, Sébastian de Bone, Dion Gijswijt, and David Elkouss,

Quantum 6, 715 (2022).

Entanglement distillation is an essential building block in quantum communication protocols. Here, we study the class of near-term implementable distillation protocols that use bilocal Cliff…

Paper

Deep Learning of Quantum Many-Body Dynamics via Random Driving

Naeimeh Mohseni, Thomas Fösel, Lingzhen Guo, Carlos Navarrete-Benlloch, and Florian Marquardt,

Quantum 6, 714 (2022).

Neural networks have emerged as a powerful way to approach many practical problems in quantum physics. In this work, we illustrate the power of deep learning to predict the dynamics of a qua…

Paper

Quantum and Classical Bayesian Agents

John B. DeBrota and Peter J. Love,

Quantum 6, 713 (2022).

We describe a general approach to modeling rational decision-making agents who adopt either quantum or classical mechanics based on the Quantum Bayesian (QBist) approach to quantum theory. W…

Paper

Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms

Sven Jandura and Guido Pupillo,

Quantum 6, 712 (2022).

We identify time-optimal laser pulses to implement the controlled-Z gate and its three qubit generalization, the C$_2$Z gate, for Rydberg atoms in the blockade regime. Pulses are optimized usi…

Paper

Connectivity constrains quantum codes

Nouédyn Baspin and Anirudh Krishna,

Quantum 6, 711 (2022).

Quantum low-density parity-check (LDPC) codes are an important class of quantum error correcting codes. In such codes, each qubit only affects a constant number of syndrome bits, and each sy…

Paper

Approaching the theoretical limit in quantum gate decomposition

Péter Rakyta and Zoltán Zimborás,

Quantum 6, 710 (2022).

In this work we propose a novel numerical approach to decompose general quantum programs in terms of single- and two-qubit quantum gates with a $CNOT$ gate count very close to the current theo…

Category: Paper