Performance analysis of continuous-variable quantum key distribution
using non-Gaussian states
- URL: http://arxiv.org/abs/2112.10128v1
- Date: Sun, 19 Dec 2021 11:55:17 GMT
- Title: Performance analysis of continuous-variable quantum key distribution
using non-Gaussian states
- Authors: L.S. Aguiar, L.F.M. Borelli, J.A. Roversi and A. Vidiella-Barranco
- Abstract summary: In this study, we analyze the efficiency of a protocol with discrete modulation of continuous variable non-Gaussian states.
We calculate the secure key generation rate against collective attacks using the fact that Eve's information can be bounded based on the protocol.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this study, we analyze the efficiency of a protocol with discrete
modulation of continuous variable non-Gaussian states, the coherent states
having one photon added and then one photon subtracted (PASCS). We calculate
the secure key generation rate against collective attacks using the fact that
Eve's information can be bounded based on the protocol with Gaussian
modulation, which in turn is unconditionally secure. Our results for a
four-state protocol show that the PASCS always outperforms the equivalent
coherent states protocol under the same environmental conditions.
Interestingly, we find that for the protocol using discrete-modulated PASCS,
the noisier the line, the better will be its performance compared to the
protocol using coherent states. Thus, our proposal proves to be advantageous
for performing quantum key distribution in non-ideal situations.
Related papers
- Security of a Continuous-Variable based Quantum Position Verification
Protocol [0.0]
We present and analyze a protocol that utilizes coherent states and its properties.
We prove security of the protocol against any unentangled attackers via entropic uncertainty relations.
We show that attackers who pre-share one continuous-variable EPR pair can break the protocol.
arXiv Detail & Related papers (2023-08-08T09:56:38Z) - Practical quantum secure direct communication with squeezed states [55.41644538483948]
We report the first table-top experimental demonstration of a CV-QSDC system and assess its security.
This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
arXiv Detail & Related papers (2023-06-25T19:23:42Z) - Single-photon-memory measurement-device-independent quantum secure
direct communication [63.75763893884079]
Quantum secure direct communication (QSDC) uses the quantum channel to transmit information reliably and securely.
In order to eliminate the security loopholes resulting from practical detectors, the measurement-device-independent (MDI) QSDC protocol has been proposed.
We propose a single-photon-memory MDI QSDC protocol (SPMQC) for dispensing with high-performance quantum memory.
arXiv Detail & Related papers (2022-12-12T02:23:57Z) - Quantum key distribution using single photon added-subtracted squeezed
coherent state [0.0]
In paper we investigate the security of continuous variable BB84 key distribution protocol.
Our analysis employs quantum rate, bit rate, and mutual information.
arXiv Detail & Related papers (2022-08-26T22:07:39Z) - Data post-processing for the one-way heterodyne protocol under
composable finite-size security [62.997667081978825]
We study the performance of a practical continuous-variable (CV) quantum key distribution protocol.
We focus on the Gaussian-modulated coherent-state protocol with heterodyne detection in a high signal-to-noise ratio regime.
This allows us to study the performance for practical implementations of the protocol and optimize the parameters connected to the steps above.
arXiv Detail & Related papers (2022-05-20T12:37:09Z) - Discrete-variable quantum key distribution with homodyne detection [14.121646217925441]
We propose a protocol that combines the simplicity of quantum state preparation in DV-QKD together with the cost-effective and high-bandwidth of homodyne detectors used in CV-QKD.
Our simulation suggests that the protocol is suitable for secure and high-speed practical key distribution over distances.
arXiv Detail & Related papers (2021-09-01T17:12:28Z) - Composably secure data processing for Gaussian-modulated continuous
variable quantum key distribution [58.720142291102135]
Continuous-variable quantum key distribution (QKD) employs the quadratures of a bosonic mode to establish a secret key between two remote parties.
We consider a protocol with homodyne detection in the general setting of composable finite-size security.
In particular, we analyze the high signal-to-noise regime which requires the use of high-rate (non-binary) low-density parity check codes.
arXiv Detail & Related papers (2021-03-30T18:02:55Z) - Round-robin differential phase-time-shifting protocol for quantum key
distribution: theory and experiment [58.03659958248968]
Quantum key distribution (QKD) allows the establishment of common cryptographic keys among distant parties.
Recently, a QKD protocol that circumvents the need for monitoring signal disturbance, has been proposed and demonstrated in initial experiments.
We derive the security proofs of the round-robin differential phase-time-shifting protocol in the collective attack scenario.
Our results show that the RRDPTS protocol can achieve higher secret key rate in comparison with the RRDPS, in the condition of high quantum bit error rate.
arXiv Detail & Related papers (2021-03-15T15:20:09Z) - Gaussian conversion protocols for cubic phase state generation [104.23865519192793]
Universal quantum computing with continuous variables requires non-Gaussian resources.
The cubic phase state is a non-Gaussian state whose experimental implementation has so far remained elusive.
We introduce two protocols that allow for the conversion of a non-Gaussian state to a cubic phase state.
arXiv Detail & Related papers (2020-07-07T09:19:49Z)
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.