Nonclassical-state generation in macroscopic systems via hybrid discrete-continuous quantum measurements
File(s)1602.01835v2.pdf (4.06 MB)
Accepted version
Author(s)
Milburn, TJ
Kim, MS
Vanner, MR
Type
Journal Article
Abstract
Nonclassical-state generation is an important component throughout experimental quantum science for quantum information applications and probing the fundamentals of physics. Here, we investigate permutations of quantum nondemolition quadrature measurements and single quanta addition or subtraction to prepare quantum superposition states in bosonic systems. The performance of each permutation is quantified and compared using several different nonclassicality criteria including Wigner negativity, nonclassical depth, and optimal fidelity with a coherent-state superposition. We also compare the performance of our protocol using squeezing instead of a quadrature measurement and find that the purification provided by the quadrature measurement can significantly increase the nonclassicality generated. Our approach is ideally suited for implementation in light-matter systems such as quantum optomechanics and atomic spin ensembles, and offers considerable robustness to initial thermal occupation.
Date Issued
2016-05-11
Date Acceptance
2016-02-04
Citation
Physical Review A, 2016, 93 (5)
ISSN
1094-1622
Publisher
American Physical Society
Journal / Book Title
Physical Review A
Volume
93
Issue
5
Copyright Statement
© 2016 American Physical Society
Sponsor
Engineering & Physical Science Research Council (E
Grant Number
EP/K034480/1
Subjects
Science & Technology
Physical Sciences
Optics
Physics, Atomic, Molecular & Chemical
Physics
NONDEMOLITION MEASUREMENT
ROOM-TEMPERATURE
WIGNER FUNCTION
SINGLE PHOTONS
OPTOMECHANICS
ENTANGLEMENT
FIELD
INFORMATION
INTERFACE
NOISE
General Physics
02 Physical Sciences
01 Mathematical Sciences
03 Chemical Sciences
Publication Status
Published
Article Number
053818