Re-examination of the role of displacement and photon catalysis operation in continuous variable measurement device-independent quantum key distribution

• URL: http://arxiv.org/abs/2406.17727v1
• Date: Tue, 25 Jun 2024 17:16:15 GMT
• Title: Re-examination of the role of displacement and photon catalysis operation in continuous variable measurement device-independent quantum key distribution
• Authors: Chandan Kumar, Arvind,
• Abstract summary: We investigate the benefits of using $m$-photon catalysed two-mode squeezed coherent ($mPCTMSC) state in continuous variable measurement quantum key distribution (CVMDIQKD) We show that the 0PCTMSC state is an inferior choice as compared to the zero photon catalyzed two-mode vacuum state for CV-MDQKD.
• Score: 4.931087628729246
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the benefits of using $m$-photon catalysed two-mode squeezed coherent ($m$-PCTMSC) state in continuous variable measurement device-independent quantum key distribution (CV-MDI-QKD). To that end, we derive the Wigner characteristic function of the $m$-PCTMSC state and show that the 0-PCTMSC state is a Gaussian state and is an inferior choice as compared to the zero photon catalyzed two-mode squeezed vacuum state for CV-MDI-QKD. We carry out the optimization of the secret key rate with respect to all state parameters, namely variance, transmissivity, and displacement. Contrary to many recent proposals, the results show that zero- and single-photon catalysis operation provides only a marginal benefit in improving the maximum transmission distance. Secondly, we find that displacement offers no benefit in improving CV-MDI-QKD.

Related papers

• 2DQuant: Low-bit Post-Training Quantization for Image Super-Resolution [83.09117439860607]
  Low-bit quantization has become widespread for compressing image super-resolution (SR) models for edge deployment. It is notorious that low-bit quantization degrades the accuracy of SR models compared to their full-precision (FP) counterparts. We present a dual-stage low-bit post-training quantization (PTQ) method for image super-resolution, namely 2DQuant, which achieves efficient and accurate SR under low-bit quantization.
  arXiv  Detail & Related papers  (2024-06-10T06:06:11Z)
• Optimization of state parameters in displacement assisted photon subtracted measurement-device-independent quantum key distribution [4.513878172564012]
  Photon subtraction (PS) has been shown to enhance the performance of quantum information processing tasks. This work investigates the role of non-Gaussian resource states in CV-MDI-QKD.
  arXiv  Detail & Related papers  (2024-06-06T17:21:47Z)
• No real advantage of photon subtraction and displacement in continuous variable measurement device independent quantum key distribution [4.513878172564012]
  We critically analyse the role of single photon subtraction (SPS) and displacement in improving the performance of continuous variable measurement device independent quantum key distribution (CV-MDI-QKD) We find that implementing SPS yields no benefits in improving the loss tolerance of CV-MDI-QKD.
  arXiv  Detail & Related papers  (2024-06-06T17:09:08Z)
• High-dimensional quantum correlation measurements with an adaptively gated hybrid single-photon camera [58.720142291102135]
  We propose an adaptively-gated hybrid intensified camera (HIC) that combines a high spatial resolution sensor and a high temporal resolution detector. With a spatial resolution of nearly 9 megapixels and nanosecond temporal resolution, this system allows for the realization of previously infeasible quantum optics experiments.
  arXiv  Detail & Related papers  (2023-05-25T16:59:27Z)
• Fast high-fidelity charge readout by operating the cavity-embedded Cooper pair transistor in the Kerr bistable regime [55.41644538483948]
  We demonstrate single-shot resolution between two charge states that are $0.09e$ apart. The measurement is performed with 94$%$ fidelity in a duration of 3 $mu$s.
  arXiv  Detail & Related papers  (2022-12-31T03:44:10Z)
• Multimode non-Gaussian secure communication under mode-mismatch [0.0]
  We consider entanglement-based protocol with non-Gaussian resources generated by single-photon-subtraction and zero-photon-catalysis. Our results indicate that, compared to the case of TMSV, these non-Gaussian resources reasonably enhances the performance of CV-QKD.
  arXiv  Detail & Related papers  (2022-06-28T05:23:03Z)
• Non-Gaussian operations in measurement device independent quantum key distribution [0.0]
  Non-Gaussian operations in continous variable (CV) quantum distribution have been limited to photon subtraction on squeezed vacuum states only. We find that non-Gaussi coherent subtraction on squeezed states CV measurement device independent (MDI) QKD can yield significantly longer transmission distances than without.
  arXiv  Detail & Related papers  (2021-11-08T05:47:52Z)
• Five-second coherence of a single spin with single-shot readout in silicon carbide [84.97423065534817]
  We demonstrate single-shot readout of single defects in silicon carbide (SiC) We achieve over 80% readout fidelity without pre- or post-selection. We report single spin T2 > 5s, over two orders of magnitude greater than previously reported in this system.
  arXiv  Detail & Related papers  (2021-10-04T17:35:02Z)
• 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)
• Superposition of two-mode squeezed states for quantum information processing and quantum sensing [55.41644538483948]
  We investigate superpositions of two-mode squeezed states (TMSSs) TMSSs have potential applications to quantum information processing and quantum sensing.
  arXiv  Detail & Related papers  (2021-02-01T18:09:01Z)
• Enhancing discrete-modulated continuous-variable measurement-device-independent quantum key distribution via quantum catalysis [2.385953310482485]
  discrete modulation can make up for the shortage of transmission distance in measurement device continuous-variable key distribution. We suggest a quantum (QC) approach for enhancing the performance of the discrete-modulated (DM) MDI-CVQKD.
  arXiv  Detail & Related papers  (2020-04-22T07:59:02Z)

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.