Utilizing weak pump depletion to stabilize squeezed vacuum states
نویسندگان
چکیده
منابع مشابه
Utilizing weak pump depletion to stabilize squeezed vacuum states.
We propose and demonstrate a pump-phase locking technique that makes use of weak pump depletion (WPD) - an unavoidable effect that is usually neglected - in a sub-threshold optical parametric oscillator (OPO). We show that the phase difference between seed and pump beam is imprinted on both light fields by the non-linear interaction in the crystal and can be read out without disturbing the sque...
متن کاملPhase variance of squeezed vacuum states
We consider the problem of estimating the phase of squeezed vacuum states within a Bayesian framework. We derive bounds on the average Holevo variance for an arbitrary number N of uncorrelated copies. We find that it scales with the mean photon number n, as dictated by the Heisenberg limit, i.e., as n−2, only for N 4. For N 4 this fundamental scaling breaks down and it becomes n−N/2. Thus, a si...
متن کاملSqueezed States in the de Sitter Vacuum
We discuss the treatment of squeezed states as excitations in the Euclidean vacuum of de Sitter space. A comparison with the treatment of these states as candidate noparticle states, or alpha-vacua, shows important differences already in the free theory. At the interacting level alpha-vacua are inconsistent, but squeezed state excitations seem perfectly acceptable. Indeed, matrix elements can b...
متن کاملQuantum teleportation with squeezed vacuum states
We show how the partial entanglement inherent in a two-mode squeezed vacuum state admits two different teleportation protocols. These two protocols refer to the different kinds of joint measurements that may be made by the sender. One protocol is the recently implemented quadrature phase approach of Braunstein and Kimble @Phys. Rev. Lett. 80, 869 ~1998!#. The other is based on recognizing that ...
متن کاملBroadband detection of squeezed vacuum: A spectrum of quantum states
A spectrum of quantum states G. Breitenbach, F. Illuminati∗, S. Schiller, and J. Mlynek Fakultät für Physik, Universität Konstanz, D-78457 Konstanz, Germany http://quantum-optics.physik.uni-konstanz.de ∗ Permanent address: Dipartimento di Fisica, Università di Salerno, and INFM, Unità di Salerno, I-84081 Salerno, Italy Phone: +49(7531) 883842, FAX +49(7531) 883072, e-mail: Gerd.Breitenbach@uni-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2015
ISSN: 1094-4087
DOI: 10.1364/oe.23.016517