scholarly journals Experimental simulation of hybrid quantum systems and entanglement on a quantum computer

2019 ◽  
Vol 115 (23) ◽  
pp. 233501
Author(s):  
Farai Mazhandu ◽  
Kayleigh Mathieson ◽  
Christopher Coleman ◽  
Somnath Bhattacharyya
Keyword(s):  
Quantum Computer ◽  
Quantum Systems ◽  
Experimental Simulation ◽  
Hybrid Quantum Systems

Absorption of magnons in dispersively coupled hybrid quantum systems

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Zeng-Xing Liu ◽  
Hao Xiong ◽  
Mu-Ying Wu ◽  
Yong-qing Li
Keyword(s):  
Quantum Systems ◽  
Hybrid Quantum Systems

scholarly journals Simulating molecules on a cloud-based 5-qubit IBM-Q universal quantum computer

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
S. Leontica ◽  
F. Tennie ◽  
T. Farrow
Keyword(s):  
Quantum System ◽  
Energy Transport ◽  
Quantum Computer ◽  
Complex Molecule ◽  
Dissipative System ◽  
Quantum Simulation ◽  
Quantum Systems ◽  
Molecular Structures ◽  
Unitary Evolution ◽  
Universal Quantum

AbstractSimulating the behaviour of complex quantum systems is impossible on classical supercomputers due to the exponential scaling of the number of quantum states with the number of particles in the simulated system. Quantum computers aim to break through this limit by using one quantum system to simulate another quantum system. Although in their infancy, they are a promising tool for applied fields seeking to simulate quantum interactions in complex atomic and molecular structures. Here, we show an efficient technique for transpiling the unitary evolution of quantum systems into the language of universal quantum computation using the IBM quantum computer and show that it is a viable tool for compiling near-term quantum simulation algorithms. We develop code that decomposes arbitrary 3-qubit gates and implement it in a quantum simulation first for a linear ordered chain to highlight the generality of the approach, and second, for a complex molecule. We choose the Fenna-Matthews-Olsen (FMO) photosynthetic protein because it has a well characterised Hamiltonian and presents a complex dissipative system coupled to a noisy environment that helps to improve the efficiency of energy transport. The method can be implemented in a broad range of molecular and other simulation settings.

scholarly journals Coherent acoustic control of a single silicon vacancy spin in diamond

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Smarak Maity ◽  
Linbo Shao ◽  
Stefan Bogdanović ◽  
Srujan Meesala ◽  
Young-Ik Sohn ◽  
...  
Keyword(s):  
Quantum Systems ◽  
Phonon Coupling ◽  
Single Spin ◽  
Silicon Vacancy ◽  
Acoustic Control ◽  
State Point ◽  
Hybrid Quantum Systems ◽  
Universal Quantum ◽  
Vacancy Center ◽  
Strong Spin

AbstractPhonons are considered to be universal quantum transducers due to their ability to couple to a wide variety of quantum systems. Among these systems, solid-state point defect spins are known for being long-lived optically accessible quantum memories. Recently, it has been shown that inversion-symmetric defects in diamond, such as the negatively charged silicon vacancy center (SiV), feature spin qubits that are highly susceptible to strain. Here, we leverage this strain response to achieve coherent and low-power acoustic control of a single SiV spin, and perform acoustically driven Ramsey interferometry of a single spin. Our results demonstrate an efficient method of spin control for these systems, offering a path towards strong spin-phonon coupling and phonon-mediated hybrid quantum systems.

scholarly journals Publisher's Note: “Loop-gap microwave resonator for hybrid quantum systems” [Appl. Phys. Lett. 112, 204102 (2018)]

2018 ◽  
Vol 113 (3) ◽  
pp. 039903
Author(s):  
Jason R. Ball ◽  
Yu Yamashiro ◽  
Hitoshi Sumiya ◽  
Shinobu Onoda ◽  
Takeshi Ohshima ◽  
...  
Keyword(s):  
Quantum Systems ◽  
Microwave Resonator ◽  
Hybrid Quantum Systems

scholarly journals Quantum technologies with hybrid systems

2015 ◽  
Vol 112 (13) ◽  
pp. 3866-3873 ◽  
Author(s):  
Gershon Kurizki ◽  
Patrice Bertet ◽  
Yuimaru Kubo ◽  
Klaus Mølmer ◽  
David Petrosyan ◽  
...  
Keyword(s):  
Quantum Information ◽  
Secure Communication ◽  
Quantum Information Processing ◽  
Quantum Systems ◽  
Quantum States ◽  
Current Direction ◽  
Ongoing Effort ◽  
Hybrid Quantum Systems ◽  
Physical Components

An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ongoing effort, devices for quantum information processing, secure communication, and high-precision sensing are being implemented with diverse systems, ranging from photons, atoms, and spins to mesoscopic superconducting and nanomechanical structures. Their physical properties make some of these systems better suited than others for specific tasks; thus, photons are well suited for transmitting quantum information, weakly interacting spins can serve as long-lived quantum memories, and superconducting elements can rapidly process information encoded in their quantum states. A central goal of the envisaged quantum technologies is to develop devices that can simultaneously perform several of these tasks, namely, reliably store, process, and transmit quantum information. Hybrid quantum systems composed of different physical components with complementary functionalities may provide precisely such multitasking capabilities. This article reviews some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and challenges they present and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

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