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Title: Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line

Abstract

We propose an experimental procedure to directly measure the state of an electromagnetic field inside a resonator, corresponding to a superconducting transmission line, coupled to a Cooper-pair box (CPB). The measurement protocol is based on the use of a dispersive interaction between the field and the CPB, and the coupling to an external classical field that is tuned to resonance with either the field or the CPB. We present a numerical simulation that demonstrates the feasibility of this protocol, which is within reach of present technology.

Authors:
; ;  [1];  [1];  [2]
  1. Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ (Brazil)
  2. (Brazil)
Publication Date:
OSTI Identifier:
20786823
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.73.030303; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; COOPER PAIRS; COUPLING; ELECTROMAGNETIC FIELDS; ENERGY LEVELS; POWER TRANSMISSION LINES; RESONANCE; RESONATORS

Citation Formats

Melo, F. de, Aolita, L., Davidovich, L., Toscano, F., and Fundacao Centro de Ciencias e Educacao Superior a Distancia do Estado do Rio de Janeiro, 20943-001 Rio de Janeiro, RJ. Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.0.
Melo, F. de, Aolita, L., Davidovich, L., Toscano, F., & Fundacao Centro de Ciencias e Educacao Superior a Distancia do Estado do Rio de Janeiro, 20943-001 Rio de Janeiro, RJ. Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line. United States. doi:10.1103/PHYSREVA.73.0.
Melo, F. de, Aolita, L., Davidovich, L., Toscano, F., and Fundacao Centro de Ciencias e Educacao Superior a Distancia do Estado do Rio de Janeiro, 20943-001 Rio de Janeiro, RJ. Wed . "Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line". United States. doi:10.1103/PHYSREVA.73.0.
@article{osti_20786823,
title = {Direct measurement of the quantum state of the electromagnetic field in a superconducting transmission line},
author = {Melo, F. de and Aolita, L. and Davidovich, L. and Toscano, F. and Fundacao Centro de Ciencias e Educacao Superior a Distancia do Estado do Rio de Janeiro, 20943-001 Rio de Janeiro, RJ},
abstractNote = {We propose an experimental procedure to directly measure the state of an electromagnetic field inside a resonator, corresponding to a superconducting transmission line, coupled to a Cooper-pair box (CPB). The measurement protocol is based on the use of a dispersive interaction between the field and the CPB, and the coupling to an external classical field that is tuned to resonance with either the field or the CPB. We present a numerical simulation that demonstrates the feasibility of this protocol, which is within reach of present technology.},
doi = {10.1103/PHYSREVA.73.0},
journal = {Physical Review. A},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}