Paper – Page 3 – Quantum

Paper

Amplitude Estimation from Quantum Signal Processing

Patrick Rall and Bryce Fuller,

Quantum 7, 937 (2023).

Amplitude estimation algorithms are based on Grover's algorithm: alternating reflections about the input state and the desired outcome. But what if we are given the ability to perform arbitr…

Paper

Efficient algorithms for quantum information bottleneck

Masahito Hayashi and Yuxiang Yang,

Quantum 7, 936 (2023).

The ability to extract relevant information is critical to learning. An ingenious approach as such is the information bottleneck, an optimisation problem whose solution corresponds to a fait…

Paper

Modular architectures to deterministically generate graph states

Hassan Shapourian and Alireza Shabani,

Quantum 7, 935 (2023).

Graph states are a family of stabilizer states which can be tailored towards various applications in photonic quantum computing and quantum communication. In this paper, we present a modular…

Paper

Fast quantum circuit cutting with randomized measurements

Angus Lowe, Matija Medvidović, Anthony Hayes, Lee J. O’Riordan, Thomas R. Bromley, Juan Miguel Arrazola, and Nathan Killoran,

Quantum 7, 934 (2023).

We propose a new method to extend the size of a quantum computation beyond the number of physical qubits available on a single device. This is accomplished by randomly inserting measure-and-…

Paper

Variational quantum solutions to the Shortest Vector Problem

Martin R. Albrecht, Miloš Prokop, Yixin Shen, and Petros Wallden,

Quantum 7, 933 (2023).

A fundamental computational problem is to find a shortest non-zero vector in Euclidean lattices, a problem known as the Shortest Vector Problem (SVP). This problem is believed to be hard eve…

Paper

Security of device-independent quantum key distribution protocols: a review

Ignatius W. Primaatmaja, Koon Tong Goh, Ernest Y.-Z. Tan, John T.-F. Khoo, Shouvik Ghorai, and Charles C.-W. Lim,

Quantum 7, 932 (2023).

Device-independent quantum key distribution (DI-QKD) is often seen as the ultimate key exchange protocol in terms of security, as it can be performed securely with uncharacterised black-box…

Paper

Perceval: A Software Platform for Discrete Variable Photonic Quantum Computing

Nicolas Heurtel, Andreas Fyrillas, Grégoire de Gliniasty, Raphaël Le Bihan, Sébastien Malherbe, Marceau Pailhas, Eric Bertasi, Boris Bourdoncle, Pierre-Emmanuel Emeriau, Rawad Mezher, Luka Music, Nadia Belabas, Benoît Valiron, Pascale Senellart, Shane Mansfield, and Jean Senellart,

Quantum 7, 931 (2023).

We introduce $Perceval$, an open-source software platform for simulating and interfacing with discrete-variable photonic quantum computers, and describe its main features and components. Its P…

Paper

Quantum circuits for solving local fermion-to-qubit mappings

Jannes Nys and Giuseppe Carleo,

Quantum 7, 930 (2023).

Local Hamiltonians of fermionic systems on a lattice can be mapped onto local qubit Hamiltonians. Maintaining the locality of the operators comes at the expense of increasing the Hilbert spa…

Paper

Efficient color code decoders in $d\geq 2$ dimensions from toric code decoders

Aleksander Kubica and Nicolas Delfosse,

Quantum 7, 929 (2023).

We introduce an efficient decoder of the color code in $d\geq 2$ dimensions, the Restriction Decoder, which uses any $d$-dimensional toric code decoder combined with a local lifting procedure to…

Paper

Black holes as clouded mirrors: the Hayden-Preskill protocol with symmetry

Yoshifumi Nakata, Eyuri Wakakuwa, and Masato Koashi,

Quantum 7, 928 (2023).

The Hayden-Preskill protocol is a qubit-toy model of the black hole information paradox. Based on the assumption of scrambling, it was revealed that quantum information is instantly leaked o…

Paper

Classifying phases protected by matrix product operator symmetries using matrix product states

José Garre-Rubio, Laurens Lootens, and András Molnár,

Quantum 7, 927 (2023).

We classify the different ways in which matrix product states (MPSs) can stay invariant under the action of matrix product operator (MPO) symmetries. This is achieved through a local charact…

Paper

Quantifying EPR: the resource theory of nonclassicality of common-cause assemblages

Beata Zjawin, David Schmid, Matty J. Hoban, and Ana Belén Sainz,

Quantum 7, 926 (2023).

Einstein-Podolsky-Rosen (EPR) steering is often (implicitly or explicitly) taken to be evidence for spooky action-at-a-distance. An alternative perspective on steering is that Alice has no c…

Paper

Enabling Multi-programming Mechanism for Quantum Computing in the NISQ Era

Siyuan Niu and Aida Todri-Sanial,

Quantum 7, 925 (2023).

NISQ devices have several physical limitations and unavoidable noisy quantum operations, and only small circuits can be executed on a quantum machine to get reliable results. This leads to t…

Paper

Performance analysis of quantum repeaters enabled by deterministically generated photonic graph states

Yuan Zhan, Paul Hilaire, Edwin Barnes, Sophia E. Economou, and Shuo Sun,

Quantum 7, 924 (2023).

By encoding logical qubits into specific types of photonic graph states, one can realize quantum repeaters that enable fast entanglement distribution rates approaching classical communicatio…

Paper

Purifying teleportation

Katarzyna Roszak and Jarosław K. Korbicz,

Quantum 7, 923 (2023).

Coupling to the environment typically suppresses quantum properties of physical systems via decoherence mechanisms. This is one of the main obstacles in practical implementations of quantum…

Paper

Graph-theoretic approach to Bell experiments with low detection efficiency

Zhen-Peng Xu, Jonathan Steinberg, Jaskaran Singh, Antonio J. López-Tarrida, José R. Portillo, and Adán Cabello,

Quantum 7, 922 (2023).

Bell inequality tests where the detection efficiency is below a certain threshold $\eta_{\rm{crit}}$ can be simulated with local hidden-variable models. Here, we introduce a method to identify…