Achievability of Covert Quantum Communication

• URL: http://arxiv.org/abs/2501.13103v2
• Date: Sun, 26 Jan 2025 23:01:55 GMT
• Title: Achievability of Covert Quantum Communication
• Authors: Evan J. D. Anderson, Michael S. Bullock, Filip Rozpędek, Boulat A. Bash,
• Abstract summary: We show the achievability of a $textitsquare root law$ (SRL) for quantum covert communication similar to that for classical. We lower bound $M(n)$ with and without assistance from a two-way covert classical channel.
• Score: 2.2474167740753557
• License:
• Abstract: We explore covert communication of qubits over an arbitrary quantum channel. Covert communication conceals the transmissions in the channel noise, ensuring that an adversary is unable to detect their presence. We show the achievability of a $\textit{square root law}$ (SRL) for quantum covert communication similar to that for classical: $M(n)\propto\sqrt{n}$ qubits can be transmitted covertly and reliably over $n$ uses of a general quantum channel. We lower bound $M(n)$ with and without assistance from a two-way covert classical channel. In the former case, we quantify the number of classical covert bits sufficient for our protocol.

Related papers

• Extendibility limits quantum-secured communication and key distillation [4.079147243688764]
  We study the task of secret-key distillation from bipartite states and point-to-point quantum channels. We extend our formalism to private communication over a quantum channel assisted by forward classical communication.
  arXiv  Detail & Related papers  (2024-10-28T18:00:11Z)
• Unextendible entanglement of quantum channels [4.079147243688764]
  We study the ability of quantum channels to perform quantum communication tasks. A quantum channel can distill a highly entangled state between two parties. We generalize the formalism of $k$-extendibility to bipartite superchannels.
  arXiv  Detail & Related papers  (2024-07-22T18:00:17Z)
• General Communication Enhancement via the Quantum Switch [15.779145740528417]
  We conjecture that $mathcalP_n>0$ is both a necessary and sufficient condition for communication enhancement via the quantum $tt SWITCH$. We then formulate a communication protocol involving the quantum $tt SWITCH$ which enhances the private capacity of the BB84 channel.
  arXiv  Detail & Related papers  (2024-07-03T00:47:13Z)
• Covert Quantum Communication Over Optical Channels [2.094817774591302]
  We show a emphsquare root law (SRL) for quantum covert communication similar to that for classical. Our proof uses photonic dual-rail qubit encoding, which has been proposed for long-range repeater-based quantum communication. Our converse employs prior covert signal power limit results and adapts well-known methods to upper bound quantum capacity of optical channels.
  arXiv  Detail & Related papers  (2024-01-12T18:54:56Z)
• Simple Tests of Quantumness Also Certify Qubits [69.96668065491183]
  A test of quantumness is a protocol that allows a classical verifier to certify (only) that a prover is not classical. We show that tests of quantumness that follow a certain template, which captures recent proposals such as (Kalai et al., 2022) can in fact do much more. Namely, the same protocols can be used for certifying a qubit, a building-block that stands at the heart of applications such as certifiable randomness and classical delegation of quantum computation.
  arXiv  Detail & Related papers  (2023-03-02T14:18:17Z)
• Classical analogue of quantum superdense coding and communication advantage of a single quantum system [0.0]
  We show that a qubit communication without any assistance of classical shared randomness can achieve the goal. We also study communication utility of a class of non-classical toy systems described by symmetric polygonal state spaces.
  arXiv  Detail & Related papers  (2022-02-14T15:29:59Z)
• Computation-aided classical-quantum multiple access to boost network communication speeds [61.12008553173672]
  We quantify achievable quantum communication rates of codes with computation property for a two-sender cq-MAC. We show that it achieves the maximum possible communication rate (the single-user capacity), which cannot be achieved with conventional design.
  arXiv  Detail & Related papers  (2021-05-30T11:19:47Z)
• Secure Two-Party Quantum Computation Over Classical Channels [63.97763079214294]
  We consider the setting where the two parties (a classical Alice and a quantum Bob) can communicate only via a classical channel. We show that it is in general impossible to realize a two-party quantum functionality with black-box simulation in the case of malicious quantum adversaries. We provide a compiler that takes as input a classical proof of quantum knowledge (PoQK) protocol for a QMA relation R and outputs a zero-knowledge PoQK for R that can be verified by classical parties.
  arXiv  Detail & Related papers  (2020-10-15T17:55:31Z)
• Fault-tolerant Coding for Quantum Communication [71.206200318454]
  encode and decode circuits to reliably send messages over many uses of a noisy channel. For every quantum channel $T$ and every $eps>0$ there exists a threshold $p(epsilon,T)$ for the gate error probability below which rates larger than $C-epsilon$ are fault-tolerantly achievable. Our results are relevant in communication over large distances, and also on-chip, where distant parts of a quantum computer might need to communicate under higher levels of noise.
  arXiv  Detail & Related papers  (2020-09-15T15:10:50Z)
• Security Limitations of Classical-Client Delegated Quantum Computing [54.28005879611532]
  A client remotely prepares a quantum state using a classical channel. Privacy loss incurred by employing $RSP_CC$ as a sub-module is unclear. We show that a specific $RSP_CC$ protocol can replace the quantum channel at least in some contexts.
  arXiv  Detail & Related papers  (2020-07-03T13:15:13Z)
• Single-Shot Secure Quantum Network Coding for General Multiple Unicast Network with Free One-Way Public Communication [56.678354403278206]
  We propose a canonical method to derive a secure quantum network code over a multiple unicast quantum network. Our code correctly transmits quantum states when there is no attack. It also guarantees the secrecy of the transmitted quantum state even with the existence of an attack.
  arXiv  Detail & Related papers  (2020-03-30T09:25:13Z)

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.