Notice
Seminar
Measurement-device-independent certification of continuous-variable quantum resources
Author
admsquis
Date
2025-03-26
Views
71
Dear all,
Paolo Abiuso from IQOQI, Vienna, will be giving a seminar on March 26. Details of the seminar are given below:
Date: March 26 (Wednesday), 2025
Time: 2PM
Venue: 56-501
Title: Measurement-device-independent certification of continuous-variable quantum resources
Abstract: We consider measurement-device-independent (MDI) protocols for the certification of different quantum resources. These protocols have been studied in the literature mostly for finite-dimensional systems. However, continuous-variable (CV) quantum information protocols represent an essential tool in the development of quantum technologies, especially as quantum optics is reaching high level of reliability and efficiency in most laboratories and integrated systems. Additionally, it is known that in the Gaussian regime, quantum optics cannot be used for fully device-independent protocols. MDI scenarios are, in this sense, minimal for this class of experiments.
By leveraging techniques of quantum metrology, in [1], we prove MDI entanglement witnesses exist for all CV entangled states, and more specifically we design a practical MDI witness for all Gaussian CV entangled states. Similarly, in [2] we provide a practical protocol for the MDI task of CV quantum memory verification (a proper quantum memory is argued to consist in a quantum channel which cannot be simulated with a measurement followed by classical information storage and a final state preparation, i.e. an entanglement breaking channel). Finally, we present the experimental demonstration of the mentioned theoretical proposals [3].
These MDI certification tasks can be seen as instances of future scenarios in which users with limited technological capabilities will need to interact with large, untrusted quantum service providers, by sending simple quantum pulses and receiving back classical data only.
References
[1] Abiuso, P., Bäuml, S., Cavalcanti, D. and Acín, A., 2021. Measurement-device-independent entanglement detection for continuous-variable systems. Physical Review Letters, 126(19), p.190502.
[2] Abiuso, P., 2023. Verification of continuous-variable quantum memories. Quantum Science and Technology, 9(1), p.01LT02.
[3] Larsen, B.L., et al, 2025. Continuous variable measurement-device-independent quantum certification, arXiv 2501.10217 .
Paolo Abiuso from IQOQI, Vienna, will be giving a seminar on March 26. Details of the seminar are given below:
Date: March 26 (Wednesday), 2025
Time: 2PM
Venue: 56-501
Title: Measurement-device-independent certification of continuous-variable quantum resources
Abstract: We consider measurement-device-independent (MDI) protocols for the certification of different quantum resources. These protocols have been studied in the literature mostly for finite-dimensional systems. However, continuous-variable (CV) quantum information protocols represent an essential tool in the development of quantum technologies, especially as quantum optics is reaching high level of reliability and efficiency in most laboratories and integrated systems. Additionally, it is known that in the Gaussian regime, quantum optics cannot be used for fully device-independent protocols. MDI scenarios are, in this sense, minimal for this class of experiments.
By leveraging techniques of quantum metrology, in [1], we prove MDI entanglement witnesses exist for all CV entangled states, and more specifically we design a practical MDI witness for all Gaussian CV entangled states. Similarly, in [2] we provide a practical protocol for the MDI task of CV quantum memory verification (a proper quantum memory is argued to consist in a quantum channel which cannot be simulated with a measurement followed by classical information storage and a final state preparation, i.e. an entanglement breaking channel). Finally, we present the experimental demonstration of the mentioned theoretical proposals [3].
These MDI certification tasks can be seen as instances of future scenarios in which users with limited technological capabilities will need to interact with large, untrusted quantum service providers, by sending simple quantum pulses and receiving back classical data only.
References
[1] Abiuso, P., Bäuml, S., Cavalcanti, D. and Acín, A., 2021. Measurement-device-independent entanglement detection for continuous-variable systems. Physical Review Letters, 126(19), p.190502.
[2] Abiuso, P., 2023. Verification of continuous-variable quantum memories. Quantum Science and Technology, 9(1), p.01LT02.
[3] Larsen, B.L., et al, 2025. Continuous variable measurement-device-independent quantum certification, arXiv 2501.10217 .
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