Quantum security and theory of decoherence

• URL: http://arxiv.org/abs/2205.12927v1
• Date: Wed, 25 May 2022 17:25:28 GMT
• Title: Quantum security and theory of decoherence
• Authors: Piotr Mironowicz
• Abstract summary: We investigate how the standard cryptographic assumption of shielded laboratory, stating that data generated by a secure quantum device remain private unless explicitly published, is disturbed by the einselection mechanism of quantum Darwinism. We derive a trade-off relation between eavesdropper's guessing probability $P_guess$ and the collective decoherence factor $Gamma.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We sketch a relation between two crucial, yet independent, fields in quantum information research, viz. quantum decoherence and quantum cryptography. We investigate here how the standard cryptographic assumption of shielded laboratory, stating that data generated by a secure quantum device remain private unless explicitly published, is disturbed by the einselection mechanism of quantum Darwinism explaining the measurement process by interaction with the external environment. We illustrate the idea with a paradigmatic example of a quantum random number generator compromised by an analog of the Van Eck phreaking. In particular, we derive a trade-off relation between eavesdropper's guessing probability $P_{guess}$ and the collective decoherence factor $\Gamma$ of the simple form $P_{guess} + \Gamma \geq 1$.

Related papers

• Commitments from Quantum One-Wayness [0.0]
  This work studies one-way state generators, a natural quantum relaxation of one-way functions. A fundamental question is whether this type of quantum one-wayness suffices to realize quantum cryptography. We prove that one-way state generators with pure state outputs imply quantum bit commitments and secure multiparty computation.
  arXiv  Detail & Related papers  (2023-10-17T18:48:22Z)
• Designs via Free Probability [0.0]
  Unitary Designs have become a vital tool for investigating pseudorandomness since they approximate the statistics of the uniform Haar ensemble. Despite their central role in quantum information, their relation to quantum chaotic evolution and in particular to the Eigenstate Thermalization Hypothesis (ETH) are still largely debated issues. This work provides a bridge between the latter and $k$-designs through Free Probability theory.
  arXiv  Detail & Related papers  (2023-08-11T15:49:40Z)
• Quantum Conformal Prediction for Reliable Uncertainty Quantification in Quantum Machine Learning [47.991114317813555]
  Quantum models implement implicit probabilistic predictors that produce multiple random decisions for each input through measurement shots. This paper proposes to leverage such randomness to define prediction sets for both classification and regression that provably capture the uncertainty of the model.
  arXiv  Detail & Related papers  (2023-04-06T22:05:21Z)
• A general framework for the composition of quantum homomorphic encryption \& quantum error correction [6.85316573653194]
  Two essential primitives for universal, cloud-based quantum computation are quantum homomorphic encryption with information-theoretic security and quantum error correction. We apply our framework to both discrete- and continuous-variable models for quantum computation.
  arXiv  Detail & Related papers  (2022-04-22T02:47:07Z)
• Self-protected adiabatic quantum computation [0.6445605125467573]
  We study the possibility of quantum computation in decoherence free subspace. This passive protection protocol can be especially advantageous for continuous quantum computation.
  arXiv  Detail & Related papers  (2022-03-18T01:52:48Z)
• Efficient Bipartite Entanglement Detection Scheme with a Quantum Adversarial Solver [89.80359585967642]
  Proposal reformulates the bipartite entanglement detection as a two-player zero-sum game completed by parameterized quantum circuits. We experimentally implement our protocol on a linear optical network and exhibit its effectiveness to accomplish the bipartite entanglement detection for 5-qubit quantum pure states and 2-qubit quantum mixed states.
  arXiv  Detail & Related papers  (2022-03-15T09:46:45Z)
• Secure distribution of a certified random quantum key using an entangled memory qubit [0.0]
  We produce a certified random secret key on both endpoints of the quantum communication channel. We certify the randomness of the key using the min-entropy of the atom-photon state.
  arXiv  Detail & Related papers  (2021-11-29T13:31:30Z)
• Realization of arbitrary doubly-controlled quantum phase gates [62.997667081978825]
  We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems. By orchestrating coherent, multi-level control over three transmon qutrits, we synthesize a family of deterministic, continuous-angle quantum phase gates acting in the natural three-qubit computational basis.
  arXiv  Detail & Related papers  (2021-08-03T17:49:09Z)
• 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)
• Quantum noise protects quantum classifiers against adversaries [120.08771960032033]
  Noise in quantum information processing is often viewed as a disruptive and difficult-to-avoid feature, especially in near-term quantum technologies. We show that by taking advantage of depolarisation noise in quantum circuits for classification, a robustness bound against adversaries can be derived. This is the first quantum protocol that can be used against the most general adversaries.
  arXiv  Detail & Related papers  (2020-03-20T17:56:14Z)
• Einselection from incompatible decoherence channels [62.997667081978825]
  We analyze an open quantum dynamics inspired by CQED experiments with two non-commuting Lindblad operators. We show that Fock states remain the most robust states to decoherence up to a critical coupling.
  arXiv  Detail & Related papers  (2020-01-29T14:15:19Z)

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.