Journal
QUANTUM INFORMATION & COMPUTATION
Volume 12, Issue 11-12, Pages 953-969Publisher
RINTON PRESS, INC
Keywords
Quantum information; quantum entanglement; continuous-variable entanglement
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Funding
- U.S. National Science Foundation [PHY-0855632, PHY-0960047]
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We show theoretically that multipartite entanglement is generated on a massive scale in the spectrum, or optical frequency comb, of a single optical parametric oscillator (OPO) emitting well above threshold. In this system, the quantum dynamics of the strongly depleted pump field are responsible for the onset of the entanglement by correlating the two-mode squeezed, bipartite-entangled pairs of OPO signal fields. (Such pairs are independent of one another in the undepleted, classical pun p approximation.) We verify the multipartite nature of the entanglement by evaluating the van Loock-Furusawa criterion for a particular set of entanglement witnesses deduced from physical considerations.
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