Quantum-state engineering with continuous-variable postselection

Lance, Andrew M., Jeong, Hyunseok, Grosse, Nicolai B., Symul, Thomas, Ralph, Timothy C. and Lam, Ping Koy (2006) Quantum-state engineering with continuous-variable postselection. Physical Review A, 73 4: 041801-1-041801-4. doi:10.1103/PhysRevA.73.041801

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Author Lance, Andrew M.
Jeong, Hyunseok
Grosse, Nicolai B.
Symul, Thomas
Ralph, Timothy C.
Lam, Ping Koy
Title Quantum-state engineering with continuous-variable postselection
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2006
Sub-type Article (original research)
DOI 10.1103/PhysRevA.73.041801
Open Access Status File (Publisher version)
Volume 73
Issue 4
Start page 041801-1
End page 041801-4
Total pages 4
Editor B. Crasemann
Place of publication United States
Publisher American Physical Society
Collection year 2006
Language eng
Subject C1
780102 Physical sciences
249999 Physical Sciences not elsewhere classified
Abstract We present a scheme to conditionally engineer an optical quantum system via continuous-variable measurements. This scheme yields high-fidelity squeezed single photons and a superposition of coherent states, from input single- and two-photon Fock states, respectively. The input Fock state is interacted with an ancilla squeezed vacuum state using a beam splitter. We transform the quantum system by postselecting on the continuous-observable measurement outcome of the ancilla state. We experimentally demonstrate the principles of this scheme using coherent states and experimentally measure fidelities that are only achievable using quantum resources.
Keyword Optics
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 09:08:48 EST