Showing 2020 · quant-phShow all

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quant-ph2020

Data-Driven System Identification of Linear Quantum Systems Coupled to Time-Varying Coherent Inputs

H. I. Nurdin, N. H. Amini, J. Chen

In this paper, we develop a system identification algorithm to identify a model for unknown linear quantum systems driven by time-varying coherent states, based on empirical single…

quant-ph2020★ 12 cited

Satellite-based Distribution of Hybrid Entanglement

Hung Do, Robert Malaney, Jonathan Green

Heterogeneous quantum networks consisting of mixed-technologies - Continuous Variable (CV) and Discrete Variable (DV) - will become ubiquitous as global quantum communication matur…

quant-ph2020★ 278 cited

Scaling silicon-based quantum computing using CMOS technology: State-of-the-art, Challenges and Perspectives

M. F. Gonzalez-Zalba, S. de Franceschi, E. Charbon +3

Complementary metal-oxide semiconductor (CMOS) technology has radically reshaped the world by taking humanity to the digital age. Cramming more transistors into the same physical s…

quant-ph2020★ 18 cited

Theory of Fano effect in cavity quantum electrodynamics

Makoto Yamaguchi, Alexey Lyasota, Tatsuro Yuge

We propose a Markovian quantum master equation that can describe the Fano effect directly, by assuming a standard cavity quantum electrodynamics system. The framework allows us to…

quant-ph2020★ 11 cited

Use of a Local Local Oscillator for the Satellite-to-Earth Channel

Sebastian Kish, Eduardo Villaseñor, Robert Malaney +2

Continuous variable quantum key distribution (CV-QKD) offers information-theoretic secure key sharing between two parties. The sharing of a phase reference frame is an essential re…

quant-ph2020★ 88 cited

Donor spins in silicon for quantum technologies

Andrea Morello, Jarryd J. Pla, Patrice Bertet +1

Dopant atoms are ubiquitous in semiconductor technologies, providing the tailored electronic properties that underpin the modern digital information era. Harnessing the quantum nat…

quant-ph2020★ 25 cited

Noiseless Linear Amplifiers for Multimode States

Mingjian He, Robert Malaney, Benjamin A. Burnett

The entanglement structure between different frequency components within broadband quantum light pulses, forged at entanglement creation, represents a promising route to the practi…

quant-ph2020★ 55 cited

Satellite-to-Earth Quantum Key Distribution via Orbital Angular Momentum

Ziqing Wang, Robert Malaney, Benjamin Burnett

In this work, we explore the feasibility of performing satellite-to-Earth quantum key distribution (QKD) using the orbital angular momentum (OAM) of light. Due to the fragility of…

quant-ph2020★ 11 cited

Nonstationary force sensing under dissipative mechanical quantum squeezing

D. N. Bernal-García, H. Vinck-Posada, M. J. Woolley

We study the stationary and nonstationary measurement of a classical force driving a mechanical oscillator coupled to an electromagnetic cavity under two-tone driving. For this pur…

quant-ph2020

Entanglement demonstration on board a nano-satellite

Aitor Villar, Alexander Lohrmann, Xueliang Bai +14

Global quantum networks for secure communication can be realised using large fleets of satellites distributing entangled photon-pairs between ground-based nodes. Because the cost o…

quant-ph2020★ 1 cited

Multi-mode CV-QKD with Noiseless Attenuation and Amplification

Mingjian He, Robert Malaney, Benjamin Burnett

In this work we study the use of noiseless attenuation and noiseless amplification, in terms of multi-mode Continuous-Variable (CV) Quantum Key Distribution (QKD) over satellite-to…

quant-ph2020★ 43 cited

Feasibility Assessment For Practical Continuous Variable Quantum Key Distribution Over The Satellite-to-Earth Channel

Sebastian Kish, Eduardo Villaseñor, Robert Malaney +2

Currently, quantum key distribution (QKD) using continuous variable (CV) technology has only been demonstrated over short-range terrestrial links. Here we attempt to answer whether…

quant-ph2020★ 28 cited

Atmospheric effects on satellite-to-ground quantum key distribution using coherent states

Eduardo Villaseñor, Robert Malaney, Kerry A. Mudge +1

Satellite-based quantum cryptography has already been demonstrated using discrete variable technology. Nonetheless, there is great interest in using weak coherent pulses to perform…

quant-ph2020★ 40 cited

Exchange coupling in a linear chain of three quantum-dot spin qubits in silicon

Kok Wai Chan, Harshad Sahasrabudhe, Wister Huang +12

Quantum gates between spin qubits can be implemented leveraging the natural Heisenberg exchange interaction between two electrons in contact with each other. This interaction is co…

quant-ph2020★ 95 cited

Pauli Blockade in Silicon Quantum Dots with Spin-Orbit Control

Amanda Seedhouse, Tuomo Tanttu, Ross C. C. Leon +12

Quantum computation relies on accurate measurements of qubits not only for reading the output of the calculation, but also to perform error correction. Most proposed scalable silic…

quant-ph2020★ 22 cited

Measuring out-of-time-ordered correlation functions without reversing time evolution

Philip Daniel Blocher, Serwan Asaad, Vincent Mourik +3

Out-of-time-ordered correlation functions (OTOCs) play a crucial role in the study of thermalization, entanglement, and quantum chaos, as they quantify the scrambling of quantum in…

quant-ph2020★ 65 cited

Learning models of quantum systems from experiments

Antonio A. Gentile, Brian Flynn, Sebastian Knauer +6

An isolated system of interacting quantum particles is described by a Hamiltonian operator. Hamiltonian models underpin the study and analysis of physical and chemical processes th…

quant-ph2020★ 8 cited

Direct approach to realising quantum filters for high-precision measurements

Joe Bentley, Hendra Nurdin, Yanbei Chen +1

Quantum noise sets a fundamental limit to the sensitivity of high-precision measurements. Suppressing it can be achieved by using non-classical states and quantum filters, which mo…

quant-ph2020★ 108 cited

Temporal Information Processing on Noisy Quantum Computers

Jiayin Chen, Hendra I. Nurdin, Naoki Yamamoto

The combination of machine learning and quantum computing has emerged as a promising approach for addressing previously untenable problems. Reservoir computing is an efficient lear…