Enhancing Quantum Key Distribution with Entanglement Distillation and Classical Advantage Distillation

• URL: http://arxiv.org/abs/2410.19334v1
• Date: Fri, 25 Oct 2024 06:40:09 GMT
• Title: Enhancing Quantum Key Distribution with Entanglement Distillation and Classical Advantage Distillation
• Authors: Shin Sun, Kenneth Goodenough, Daniel Bhatti, David Elkouss,
• Abstract summary: We present a two-stage distillation scheme concatenating entanglement distillation with classical advantage distillation. Our scheme achieves finite key rates even in the high-noise regime. The proposed scheme is well-suited for near-term quantum key distribution tasks.
• Score: 0.0
• License:
• Abstract: Realizing secure communication between distant parties is one of quantum technology's main goals. Although quantum key distribution promises information-theoretic security for sharing a secret key, the key rate heavily depends on the level of noise in the quantum channel. To overcome the noise, both quantum and classical techniques exist, i.e., entanglement distillation and classical advantage distillation. So far, these techniques have only been used separately from each other. Herein, we present a two-stage distillation scheme concatenating entanglement distillation with classical advantage distillation. While for the advantage distillation, we use a fixed protocol, i.e., the repetition code, in the case of entanglement distillation, we employ an enumeration algorithm to find the optimal protocol. We test our scheme for different noisy entangled states and demonstrate its quantitative advantage: our two-stage distillation scheme achieves finite key rates even in the high-noise regime where entanglement distillation or advantage distillation alone cannot afford key sharing. Since the advantage distillation part does not introduce further requirements on quantum resources, the proposed scheme is well-suited for near-term quantum key distribution tasks.

Related papers

• Surpassing the fundamental limits of distillation with catalysts [2.107610564835429]
  We show that quantum catalysts can help surpass previously known fundamental limitations on distillation overhead. In particular, in context of magic state distillation, our result indicates that the code-based low-overhead distillation protocols can be promoted to the one-shot setting. We demonstrate that enables a spacetime trade-off between overhead and success probability.
  arXiv  Detail & Related papers  (2024-10-18T15:41:52Z)
• Threshold (Q, P) Quantum Distillation [1.3412310262092788]
  We present a threshold quantum distillation task where the same objective is achieved but using fewer parties 'Q' Specifically, an arbitrary GHZ state can be distilled using just one party in the network, as both the success probability of the distillation protocol and the fidelity after the distillation are independent of the number of parties. For a general W-state, at least 'P-1' parties are required for the distillation, indicating a strong relationship between the distillation and the separability of such states.
  arXiv  Detail & Related papers  (2024-08-13T05:05:08Z)
• Advantage Distillation for Quantum Key Distribution [0.40964539027092917]
  Building on the entanglement distillation protocol, our framework integrates all the existing key distillation methods. Our framework can achieve higher key rates, particularly without one-time pad encryption for postprocessing.
  arXiv  Detail & Related papers  (2024-04-23T04:27:03Z)
• Coherent control of the causal order of entanglement distillation [0.0]
  Indefinite causal order is an evolving field with potential involvement in quantum technologies. We show the advantage of indefinite causal order in an application setting consistent with the requirements of quantum communication.
  arXiv  Detail & Related papers  (2023-02-27T17:29:37Z)
• The power of noisy quantum states and the advantage of resource dilution [62.997667081978825]
  Entanglement distillation allows to convert noisy quantum states into singlets. We show that entanglement dilution can increase the resilience of shared quantum states to local noise.
  arXiv  Detail & Related papers  (2022-10-25T17:39:29Z)
• Suppressing Amplitude Damping in Trapped Ions: Discrete Weak Measurements for a Non-unitary Probabilistic Noise Filter [62.997667081978825]
  We introduce a low-overhead protocol to reverse this degradation. We present two trapped-ion schemes for the implementation of a non-unitary probabilistic filter against amplitude damping noise. This filter can be understood as a protocol for single-copy quasi-distillation.
  arXiv  Detail & Related papers  (2022-09-06T18:18:41Z)
• Quantum thermodynamic methods to purify a qubit on a quantum processing unit [68.8204255655161]
  We report on a quantum thermodynamic method to purify a qubit on a quantum processing unit equipped with identical qubits. Our starting point is a three qubit design that emulates the well known two qubit swap engine. We implement it on a publicly available superconducting qubit based QPU, and observe a purification capability down to 200 mK.
  arXiv  Detail & Related papers  (2022-01-31T16:13:57Z)
• Entanglement purification by counting and locating errors with entangling measurements [62.997667081978825]
  We consider entanglement purification protocols for multiple copies of qubit states. We use high-dimensional auxiliary entangled systems to learn about number and positions of errors in the noisy ensemble.
  arXiv  Detail & Related papers  (2020-11-13T19:02:33Z)
• Entanglement-assisted entanglement purification [62.997667081978825]
  We present a new class of entanglement-assisted entanglement purification protocols that can generate high-fidelity entanglement from noisy, finite-size ensembles. Our protocols can deal with arbitrary errors, but are best suited for few errors, and work particularly well for decay noise.
  arXiv  Detail & Related papers  (2020-11-13T19:00:05Z)
• Finite Block Length Analysis on Quantum Coherence Distillation and Incoherent Randomness Extraction [64.04327674866464]
  We introduce a variant of randomness extraction framework where free incoherent operations are allowed before the incoherent measurement. We show that the maximum number of random bits extractable from a given quantum state is precisely equal to the maximum number of coherent bits that can be distilled from the same state. Remarkably, the incoherent operation classes all admit the same second order expansions.
  arXiv  Detail & Related papers  (2020-02-27T09:48:52Z)
• Key rates for quantum key distribution protocols with asymmetric noise [0.0]
  We consider the key rates achieved in the simplest quantum key distribution protocols, namely the BB84 and the six-state protocols, when non-uniform noise is present in the system. We show that it can be advantageous to use the basis with higher quantum bit error rate for the key generation.
  arXiv  Detail & Related papers  (2020-02-18T00:05:35Z)

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.