Remote Phase Sensing by Coherent Single Photon Addition
- URL: http://arxiv.org/abs/2108.11827v1
- Date: Thu, 26 Aug 2021 14:52:29 GMT
- Title: Remote Phase Sensing by Coherent Single Photon Addition
- Authors: Nicola Biagi, Saverio Francesconi, Manuel Gessner, Marco Bellini,
Alessandro Zavatta
- Abstract summary: We propose a remote phase sensing scheme inspired by the high sensitivity of the entanglement produced by coherent multimode photon addition on the phase set in the remote heralding apparatus.
We derive the optimal observable to perform remote phase estimation from heralded quadrature measurements.
- Score: 58.720142291102135
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose a remote phase sensing scheme inspired by the high sensitivity of
the entanglement produced by coherent multimode photon addition on the phase
set in the remote heralding apparatus. By exploring the case of delocalized
photon addition over two modes containing identical coherent states, we derive
the optimal observable to perform remote phase estimation from heralded
quadrature measurements. The technique is experimentally tested with
calibration measurements and then used for estimating a remote phase with a
sensitivity that is found to scale with the intensity of the (local) coherent
states, which never interacted with the sample.
Related papers
- Homodyne detection is optimal for quantum interferometry with path-entangled coherent states [0.0]
homodyning schemes analyzed here achieve optimality (saturate the quantum Cram'er-Rao bound)
In the presence of photon loss, the schemes become suboptimal, but we find that their performance is independent of the phase to be measured.
arXiv Detail & Related papers (2024-05-22T00:25:02Z) - Quantum-enhanced joint estimation of phase and phase diffusion [0.25602836891933073]
We investigate the joint estimation of phase and phase diffusion using generalized Holland-Burnett states.
We find that the highest sensitivities are obtained by using states created by directing all input photons into one port of a balanced beam splitter.
arXiv Detail & Related papers (2024-03-07T18:18:34Z) - Precision phase measurement in Mach-Zehnder interferometer with
three-photon by using a weak coherent and a squeezed vacuum state [0.0]
The measured three-photon coincidence in this system is quantified as a function of a ratio between the amplitude of the coherent state and the squeezed parameter of squeezed vacuum.
It shows that the sensitivity phase reaches the Heisenberg limit when an optimal ratio is chosen.
arXiv Detail & Related papers (2023-09-17T08:11:03Z) - Phase sensitivity of spatially broadband high-gain SU(1,1)
interferometers [0.0]
We present a theoretical description of spatially multimode SU (1,1) interferometers operating at low and high parametric gains.
Our approach is based on a step-by-step solution of a system of integro-differential equations for each nonlinear interaction region.
We investigate plane-wave and Gaussian pumping and show that for any parametric gain, there exists a region of phases for which the phase sensitivity surpasses the standard shot-noise scaling.
arXiv Detail & Related papers (2023-07-04T13:51:31Z) - Evolution of many-body systems under ancilla quantum measurements [58.720142291102135]
We study the concept of implementing quantum measurements by coupling a many-body lattice system to an ancillary degree of freedom.
We find evidence of a disentangling-entangling measurement-induced transition as was previously observed in more abstract models.
arXiv Detail & Related papers (2023-03-13T13:06:40Z) - Experimentally determining the incompatibility of two qubit measurements [55.41644538483948]
We describe and realize an experimental procedure for assessing the incompatibility of two qubit measurements.
We demonstrate this fact in an optical setup, where the qubit states are encoded into the photons' polarization degrees of freedom.
arXiv Detail & Related papers (2021-12-15T19:01:44Z) - Two-photon resonance fluorescence of two interacting non-identical
quantum emitters [77.34726150561087]
We study a system of two interacting, non-indentical quantum emitters driven by a coherent field.
We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters.
This can be exploited for applications such as superresolution imaging of point-like sources.
arXiv Detail & Related papers (2021-06-04T16:13:01Z) - Qubit-photon bound states in topological waveguides with long-range
hoppings [62.997667081978825]
Quantum emitters interacting with photonic band-gap materials lead to the appearance of qubit-photon bound states.
We study the features of the qubit-photon bound states when the emitters couple to the bulk modes in the different phases.
We consider the coupling of emitters to the edge modes appearing in the different topological phases.
arXiv Detail & Related papers (2021-05-26T10:57:21Z) - Centimeter-Wave Free-Space Time-of-Flight Imaging [25.15384123485028]
We propose a computational imaging method for all-optical free-space correlation before photo-conversion that achieves micron-scale depth resolution.
We propose an imaging approach with resonant polarization modulators and devise a novel optical dual-pass frequency-doubling which achieves high modulation contrast at more than 10GHz.
We validate the proposed method in simulation and experimentally, where it achieves micron-scale depth precision.
arXiv Detail & Related papers (2021-05-25T01:57:10Z) - Single-shot non-Gaussian Measurements for Optical Phase Estimation [0.0]
We show strategies for single-shot measurements for ab initio phase estimation of coherent states.
These strategies surpass the sensitivity limit of heterodyne measurement and approach the Cramer-Rao lower bound for coherent states.
This is, to our knowledge, the most sensitive single-shot measurement of an unknown phase encoded in optical coherent states.
arXiv Detail & Related papers (2020-08-18T23:12:34Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.