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19932026
Showing 2019 · quant-phShow all

15 papers · 2 filters

quant-ph2019★ 8 cited

Quantum simulation of quantum relativistic diffusion via quantum walks

Pablo Arnault, Adrian Macquet, Andreu Anglés-Castillo +6

Two models are first presented, of one-dimensional discrete-time quantum walk (DTQW) with temporal noise on the internal degree of freedom (i.e., the coin): (i) a model with both a…

quant-ph2019★ 12 cited

Verifiable Quantum Secure Modulo Summation

Masahito Hayashi, Takeshi Koshiba

We propose a new cryptographic task, which we call verifiable quantum secure modulo summation. Secure modulo summation is a calculation of modulo summation when $…

quant-ph2019★ 11 cited

Quantum functionalities via feedback amplification

Rion Shimazu, Naoki Yamamoto

Feedback amplification is a key technique for synthesizing various important functionalities, especially in electronic circuits involving op-amps. This paper presents a quantum ver…

quant-ph2019★ 55 cited

Area law of non-critical ground states in 1D long-range interacting systems

Tomotaka Kuwahara, Keiji Saito

The area law for entanglement provides one of the most important connections between information theory and quantum many-body physics. It is not only related to the universality of…

quant-ph2019★ 26 cited

The Grover search as a naturally occurring phenomenon

Mathieu Roget, Stéphane Guillet, Pablo Arrighi +1

We provide first evidence that under certain conditions, 1/2-spin fermions may naturally behave like a Grover search, looking for topological defects in a material. The theoretical…

quant-ph2019★ 26 cited

Coherence cost for violating conservation laws

Hiroyasu Tajima, Naoto Shiraishi, Keiji Saito

Nature imposes many restrictions on the operations that we perform. Many of these restrictions can be interpreted in terms of {\it resource} required to realize the operations. Cla…

quant-ph2019★ 295 cited

When Entanglement meets Classical Communications: Quantum Teleportation for the Quantum Internet (Invited Paper)

Angela Sara Cacciapuoti, Marcello Caleffi, Rodney Van Meter +1

Quantum Teleportation is the key communication functionality of the Quantum Internet, allowing the "transmission' of qubits without either the physical transfer of the particle sto…

quant-ph2019★ 67 cited

Computational Investigations of the Lithium Superoxide Dimer Rearrangement on Noisy Quantum Devices

Qi Gao, Hajime Nakamura, Tanvi P. Gujarati +6

Currently available noisy intermediate-scale quantum (NISQ) devices are limited by the number of qubits that can be used for quantum chemistry calculations on molecules. We show he…

quant-ph2019★ 54 cited

Analysis and synthesis of feature map for kernel-based quantum classifier

Yudai Suzuki, Hiroshi Yano, Qi Gao +4

A method for analyzing the feature map for the kernel-based quantum classifier is developed; that is, we give a general formula for computing a lower bound of the exact training ac…

quant-ph2019★ 32 cited

Quantum Random Numbers generated by the Cloud Superconducting Quantum Computer

Kentaro Tamura, Yutaka Shikano

A cloud quantum computer is similar to a random number generator in that its physical mechanism is inaccessible to its users. In this respect, a cloud quantum computer is a black b…

quant-ph2019★ 15 cited

Bandwidth analysis of AC magnetic field sensing based on electronic spin double resonance of nitrogen-vacancy centers in diamond

Tatsuma Yamaguchi, Yuichiro Matsuzaki, Shiro Saito +3

Recently we have demonstrated AC magnetic field sensing scheme using a simple continuous-wave optically detected magnetic resonance of nitrogen-vacancy centers in diamond [Appl. Ph…

quant-ph2019★ 4 cited

Control limit on quantum state preparation under decoherence

Kohei Kobayashi, Naoki Yamamoto

Quantum information technologies require careful control for generating and preserving a desired target quantum state. The biggest practical obstacle is, of course, decoherence. Th…

quant-ph2019★ 246 cited

Amplitude estimation without phase estimation

Yohichi Suzuki, Shumpei Uno, Rudy Raymond +3

This paper focuses on the quantum amplitude estimation algorithm, which is a core subroutine in quantum computation for various applications. The conventional approach for amplitud…

quant-ph2019★ 85 cited

A silicon quantum-dot-coupled nuclear spin qubit

Bas Hensen, Wister Wei Huang, Chih-Hwan Yang +9

Single nuclear spins in the solid state have long been envisaged as a platform for quantum computing, due to their long coherence times and excellent controllability. Measurements…

quant-ph2019★ 83 cited

Extracting Success from IBM's 20-Qubit Machines Using Error-Aware Compilation

Shin Nishio, Yulu Pan, Takahiko Satoh +2

NISQ (Noisy, Intermediate-Scale Quantum) computing requires error mitigation to achieve meaningful computation. Our compilation tool development focuses on the fact that the error…