Published June 2002 | Version v1
Journal article Metadata-only

Spin squeezing via quantum feedback

Creators

  • 1. Centre for Quantum Dynamics, School of Science, Griffith University, Brisbane, Queensland 4111 (Australia)
  • 2. INFM, Dipartimento di Fisica, Universita di Milano, Via Celoria 16, I-20133 Milan (Italy)
  • 3. Dipartimento di Fisica, Universita di Camerino, I-62032 Camerino (Italy)

Description

We propose a quantum feedback scheme for producing deterministically reproducible spin squeezing. The results of a continuous nondemolition atom number measurement are fed back to control the quantum state of the sample. For large samples and strong cavity coupling, the squeezing parameter minimum scales inversely with atom number, approaching the Heisenberg limit. Furthermore, ceasing the measurement and feedback when this minimum has been reached will leave the sample in the maximally squeezed spin state

Additional details

Identifiers

DOI
10.1103/PhysRevA.65.061801;
arXiv
arXiv:quant-ph/0202028v2;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
65
Journal Issue
6
Journal Page Range
p. 061801-061801.4
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36038175
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
ATOMS; CONTROL; COUPLING; ENERGY LEVELS; FEEDBACK; QUANTUM MECHANICS; SPIN
Descriptors DEC
ANGULAR MOMENTUM; MECHANICS; PARTICLE PROPERTIES

Optional Information

Notes
(c) 2002 The American Physical Society