Homodyne measurement of exponential phase moments
نویسندگان
چکیده
منابع مشابه
Homodyne measurement of exponential phase moments for quantum-phase reconstruction
We directly sample the exponential moments of the canonical phase for various quantum states from the homodyne output. The method enables us to study the phase properties experimentally, without making the detour via reconstructing the density matrix or the Wigner function and calculating the phase statistics from them. In particular, combing the measurement with a measurement of the photon-num...
متن کاملExponential Moments of Canonical Phase: Homodyne Measurements
A method for direct sampling of the exponential moments of canonical phase from the data recorded in balanced homodyne detection is presented. Analytical expressions for the sampling functions are shown which are valid for arbitrary states. A numerical simulation illustrates the applicability of the method and compares it with the direct measurement of phase by means of double homodyning.
متن کاملHomodyne measurement of the average photon number
J. G. Webb, T. C. Ralph, and E. H. Huntington Centre for Quantum Computer Technology, School of Information Technology and Electrical Engineering, University College, The University of New South Wales, Canberra, Australian Capital Territory 2600, Australia Centre for Quantum Computer Technology, Department of Physics, The University of Queensland, St Lucia, Queensland 4072, Australia Received 1...
متن کاملObservation of -9 dB quadrature squeezing with improvement of phase stability in homodyne measurement.
We observe -9.01+/-0.14 dB of squeezing and +15.12+/-0.14 dB of antisqueezing with a local oscillator phase locked in homodyne measurement. Suzuki et al. have pointed out two main factors in [Appl. Phys. Lett. 89, 061116 (2006)], which degrade the observed squeezing level:phase fluctuation in homodyne measurement and intracavity losses of an optical parametric oscillator for squeezing. We have ...
متن کاملReconstruction of algebraic-exponential data from moments
Let G be a bounded open subset of Euclidean space with real algebraic boundary Γ. Under the assumption that the degree d of Γ is given, and the power moments of the Lebesgue measure on G are known up to order 3d, we describe an algorithmic procedure for obtaining a polynomial vanishing on Γ. The particular case of semialgebraic sets defined by a single polynomial inequality raises an intriguing...
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 Communications
سال: 1998
ISSN: 0030-4018
DOI: 10.1016/s0030-4018(97)00701-3