Phase sensitivity via photon-subtraction operations inside Mach-Zehnder interferometer
- URL: http://arxiv.org/abs/2505.04499v1
- Date: Wed, 07 May 2025 15:20:55 GMT
- Title: Phase sensitivity via photon-subtraction operations inside Mach-Zehnder interferometer
- Authors: Qisi Zhou, Qinqian Kang, Tao Jiang, Zekun Zhao, Teng Zhao, Cunjin Liu, Liyun Hu,
- Abstract summary: We study phase sensitivity, quantum Fisher information and quantum Cram'er-Rao bound under both ideal and lossy conditions.<n>The results indicate that choosing an appropriate detection method and photon subtraction scheme can significantly enhance the phase sensitivity and robustness against photon losses.<n>This research highlights the significant value of this scheme in quantum precision measurement.
- Score: 5.059716048137085
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Based on the conventional Mach-Zehnder interferometer, we propose a metrological scheme to improve phase sensitivity. In this scheme, we use a coherent state and a squeezed vacuum state as input states, employ multi-photon-subtraction operations and make intensity-detection or homodyne-detection. We study phase sensitivity, quantum Fisher information and quantum Cram\'er-Rao bound under both ideal and lossy conditions. The results indicate that choosing an appropriate detection method and photon subtraction scheme can significantly enhance the phase sensitivity and robustness against photon losses. Even under lossy conditions, the multi-photon subtraction schemes can surpass the standard quantum limit. Notably, the homodyne detection method can even break through the Heisenberg limit. Moreover, increasing the number of photon-subtracted can enhance both phase sensitivity and quantum Fisher information. This research highlights the significant value of this scheme in quantum precision measurement.
Related papers
- Improved linear and Kerr nonlinear phase estimation via photon addition operations [1.0432593376885402]
The accuracy of quantum measurements can be effectively improved by using both photon-added non-Gaussian operations and Kerr nonlinear phase shifters.<n>Here, we employ coherent state mixed photon-added squeezed vacuum state as input into a Mach-Zehnder interferometer with parity detection.
arXiv Detail & Related papers (2025-05-22T01:57:17Z) - Noise Mitigation in Single Microwave Photon Counting by Cascaded Quantum Measurements [32.73124984242397]
Single microwave photon detectors (SMPDs) have only recently been demonstrated.<n>These detectors offer a substantial advantage over quantum-limited amplification schemes.<n>We report an intrinsic sensitivity of $8(1)times10-24textW/sqrttextHz$, with an operational sensitivity of $5.9(6)times 10-23textW/sqrttextHz$ limited by thermal photons in the input line.
arXiv Detail & Related papers (2025-02-20T18:26:48Z) - Sensing Based on Quantum Correlation of Photons in the Weak Nonlinear Regime [14.121716788061336]
Quantum correlation of photons based on quantum interference has been extensively studied for realizing single-photon sources in weak nonlinear regime.<n>We propose schemes to realize sensitive sensing by the quantum correlation of photons based on quantum interference.
arXiv Detail & Related papers (2024-11-28T13:39:25Z) - Cavity-Quantum Electrodynamics with Moiré Flatband Photonic Crystals [35.119260614523256]
A quantum dot can be tuned by a factor of 40, ranging from 42 ps to 1692 ps, which is attributed to strong Purcell enhancement and Purcell inhibition effects.
Our findings pave the way for moir'e flatband cavity-enhanced quantum light sources, quantum optical switches, and quantum nodes for quantum internet applications.
arXiv Detail & Related papers (2024-11-25T18:52:11Z) - Phase sensitivity for an SU(1,1) interferometer via multiphoton subtraction at the output port [7.200889618563686]
Internal photon losses within the SU(1,1) interferometer have a more significant impact on the phase sensitivity compared to external photon losses.
Even under conditions of severe photon loss, the multiphoton subtraction operations can enable the phase sensitivity to surpass the standard quantum limit.
arXiv Detail & Related papers (2024-10-23T07:08:47Z) - Demonstration of Lossy Linear Transformations and Two-Photon Interference on a Photonic Chip [78.1768579844556]
We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching.
We study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.
arXiv Detail & Related papers (2024-04-09T06:45:46Z) - Phase estimation via coherent and photon-catalyzed squeezed vacuum states [7.289718191016964]
We propose a scheme to input the coherent state mixed with photoncatalyzed squeezed vacuum state into the Mach-Zender interferometer.
The phase measurement accuracy can exceed the standard quantum limit, and even surpass the Heisenberg limit.
arXiv Detail & Related papers (2024-03-23T08:26:04Z) - Observations of super-resolution using phase-controlled coherent photons
in a delayed-choice quantum eraser scheme [15.768497217367257]
Super-resolution overcoming the standard quantum limit has been intensively studied for quantum sensing applications.
Here, we report observations of coherently excited super-resolution using phase-controlled coherent photons.
arXiv Detail & Related papers (2023-12-06T08:35:49Z) - Simultaneous quantum estimation of phase and indistinguishability in a
two photon interferometer [0.0]
We derive the quantum Fisher information matrix associated to the simultaneous estimation of an interferometric phase.
We perform an experiment based on a pair of photons with an unknown degree of indistinguishability entering a two-port interferometer.
arXiv Detail & Related papers (2023-03-27T18:56:03Z) - Quantifying n-photon indistinguishability with a cyclic integrated
interferometer [40.24757332810004]
We report on a universal method to measure the genuine indistinguishability of n-photons.
Our approach relies on a low-depth cyclic multiport interferometer with N = 2n modes.
We experimentally demonstrate this technique for a 8-mode integrated interferometer fabricated using femtosecond laser micromachining.
arXiv Detail & Related papers (2022-01-31T16:30:52Z) - Quantum metrology with a non-linear kicked Mach-Zehnder interferometer [0.0]
We study the sensitivity of a Mach-Zehnder interferometer that contains in addition to the phase shifter a non-linear element.
By including both elements in a cavity or a loop that the light transverses many times, a non-linear kicked version of the interferometer arises.
arXiv Detail & Related papers (2022-01-28T17:12:05Z) - A quantum-enhanced wide-field phase imager [37.41181188499616]
We introduce a super-sensitive phase imager, which uses space-polarization hyper-entanglement to operate over a large field-of-view without the need of scanning operation.
We show quantum-enhanced imaging of birefringent and non-birefringent phase samples over large areas, with sensitivity improvements over equivalent measurements carried out with equal number of photons.
arXiv Detail & Related papers (2021-05-24T16:37:03Z) - Improving the Precision of Optical Metrology by Detecting Fewer Photons [22.469758054077396]
In optical metrological protocols to measure physical quantities, it is always beneficial to increase photon number to improve measurement precision.
We show that a modified weak measurement protocol, namely, biased weak measurement significantly improves the precision of optical metrology in the presence of saturation effect.
arXiv Detail & Related papers (2021-03-23T08:14:45Z)
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.