Certified random-number generation from quantum steering

J., Joch, Dominick; Slussarenko, Sergei; Wang, Yuanlong; Pepper, Alex; Xie, Shouyi; Xu, Binbin; Berkman, Ian R.; Rogge, Sven; Pryde, Geoff J.

doi:10.1103/physreva.106.l050401

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…Note added. We note that a complementary work demonstrating steering-based randomness certification with discrete variables appeared recently [55]. The TMS state in the Fock basis is given by…”

Section: Discussionmentioning

confidence: 99%

Steering-based randomness certification with squeezed states and homodyne measurements

et al. 2022

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High-quality randomness, certified to be unpredictable by eavesdroppers, is key to secure information processing. Quantum mechanics enables randomness certification with minimal trust in the devices used, by exploiting quantum nonlocality. However, such full device independence is challenging to implement. We present a scheme for quantum randomness certification based on quantum steering. The protocol is one-sided device independent, providing high security, but requires only states and measurements that are simple to realize on quantum optics platforms-squeezed vacuum states and homodyne detection. This ease of implementation is demonstrated experimentally and implies that gigahertz random bit rates should be attainable with current technology. Furthermore, our scheme is immune to the detection loophole and represents the closest to full device independence that can be achieved using purely Gaussian states and measurements.

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Section: Discussionmentioning

confidence: 99%

Steering-based randomness certification with squeezed states and homodyne measurements

et al. 2022

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“…Moreover, not every entangled state exhibits steering, and not every steerable state violates Bell inequality 3 . EPR-steering has a wide range of applications in many quantum information processing tasks, e.g., in one-sided device-independent quantum key distribution 9 – 11 , quantum networking tasks 12 – 14 , subchannel discrimination 15 – 17 , quantum secret sharing 18 , 19 , quantum teleportation 20 , randomness certification 21 – 23 , and random number generation 24 to mention a few. Recently, it has also been demonstrated to be a useful resource in noisy and lossy quantum network systems 25 , 26 .…”

Section: Introductionmentioning

confidence: 99%

Stronger EPR-steering criterion based on inferred Schrödinger–Robertson uncertainty relation

Naik,

Das,

Panigrahi

2024

Sci Rep

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Steering is one of the three in-equivalent forms of nonlocal correlations intermediate between Bell nonlocality and entanglement. Schrödinger–Robertson uncertainty relation (SRUR), has been widely used to detect entanglement and steering. However, the steering criterion in earlier works, based on SRUR, did not involve complete inferred-variance uncertainty relation. In this paper, by considering the local hidden state model and Reid’s formalism, we derive a complete inferred-variance EPR-steering criterion based on SRUR in the bipartite scenario. Furthermore, we check the effectiveness of our steering criterion with discrete variable bipartite two-qubit and two-qutrit isotropic states.

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“…It has recently aroused more and more interest, both form a theoretical and experimental [11][12][13] perspective. People have been committed to the research of quantum steering because of the useful characteristics of steering and its potential applications in quantum information, such as one-side deviceindependent quantum key distribution [14], random-number generation [15,16], metrology [17], and so on.…”

Section: Introductionmentioning

confidence: 99%

Sharing EPR steering between sequential pairs of observers

Liang

Fei

2023

J. Phys. A: Math. Theor.

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The recycling of quantum correlations has attracted widespread attention both theoretically and experimentally. Previous works show that bilateral sharing of nonlocality is impossible under mild measurement strategy and 2-qubit entangled state can be used to witness entanglement arbitrary many times by sequential and independent pairs of observers. However, less is known about the bilateral sharing of EPR steering yet. Here, we aim at investigating the EPR steering sharing between sequential pairs of observers. We show that an unbounded number of sequential Alice-Bob pairs can share the EPR steering as long as the initially shared state is an entangledtwo-qubit pure state. The claim is also true for particular class of mixed entangled states.

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Certified random-number generation from quantum steering

Cited by 7 publications

References 45 publications

Steering-based randomness certification with squeezed states and homodyne measurements

Steering-based randomness certification with squeezed states and homodyne measurements

Stronger EPR-steering criterion based on inferred Schrödinger–Robertson uncertainty relation

Sharing EPR steering between sequential pairs of observers

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