Self-testing mutually unbiased bases in higher dimensions with
space-division multiplexing optical fiber technology
- URL: http://arxiv.org/abs/2006.06784v1
- Date: Thu, 11 Jun 2020 20:09:29 GMT
- Title: Self-testing mutually unbiased bases in higher dimensions with
space-division multiplexing optical fiber technology
- Authors: M\'at\'e Farkas, Nayda Guerrero, Jaime Cari\~ne, Gustavo Ca\~nas,
Gustavo Lima
- Abstract summary: We experimentally study whether self-testing protocols can be adopted to certify the proper functioning of new quantum devices.
Our results are of practical interest for future quantum works relying on space-division multiplexing optical fibers.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In the device-independent quantum information approach, the implementation of
a given task can be self-tested solely from the recorded statistics and without
detailed models for the employed devices. Even though experimentally demanding,
it provides appealing verification schemes for advanced quantum technologies
that naturally fulfil the associated requirements. In this work, we
experimentally study whether self-testing protocols can be adopted to certify
the proper functioning of new quantum devices built with modern space-division
multiplexing optical fiber technology. Specifically, we consider the
prepare-and-measure protocol of M.~Farkas and J.~Kaniewski (Phys.~Rev.~A 99,
032316) for self-testing measurements corresponding to mutually unbiased bases
(MUBs) in a dimension $d>2$. In our scheme, the state preparation and
measurement stages are implemented with a multi-arm interferometer built with
new multi-core optical fibers and related components. Due to the high-overlap
of the interferometer's optical modes achieved with this technology, we are
able to reach the required visibilities for self-testing the implementation of
two four-dimensional MUBs. We also quantify two operational quantities of the
measurements: (i) the incompatibility robustness, connected to Bell violations,
and (ii) the randomness extractable from the outcomes. Since MUBs lie at the
core of several quantum information protocols, our results are of practical
interest for future quantum works relying on space-division multiplexing
optical fibers.
Related papers
- Robust self-testing of the $m-$partite maximally entangled state and observables [0.0]
We propose a simple and efficient self-testing protocol that certifies the state and observables based on the optimal quantum violation of the Svetlichny inequality.
Our method leverages an elegant sum-of-squares approach to derive the optimal quantum value of the Svetlichny functional, devoid of assuming the dimension of the quantum system.
arXiv Detail & Related papers (2024-08-20T11:03:37Z) - A universal scheme to self-test any quantum state and extremal measurement [41.94295877935867]
quantum network considered in this work is the simple star network, which is implementable using current technologies.
For our purposes, we also construct a scheme that can be used to self-test the two-dimensional tomographically complete set of measurements with an arbitrary number of parties.
arXiv Detail & Related papers (2023-12-07T16:20:28Z) - Enhanced Entanglement in the Measurement-Altered Quantum Ising Chain [46.99825956909532]
Local quantum measurements do not simply disentangle degrees of freedom, but may actually strengthen the entanglement in the system.
This paper explores how a finite density of local measurement modifies a given state's entanglement structure.
arXiv Detail & Related papers (2023-10-04T09:51:00Z) - Measurement-induced entanglement and teleportation on a noisy quantum
processor [105.44548669906976]
We investigate measurement-induced quantum information phases on up to 70 superconducting qubits.
We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases.
Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
arXiv Detail & Related papers (2023-03-08T18:41:53Z) - Anticipative measurements in hybrid quantum-classical computation [68.8204255655161]
We present an approach where the quantum computation is supplemented by a classical result.
Taking advantage of its anticipation also leads to a new type of quantum measurements, which we call anticipative.
In an anticipative quantum measurement the combination of the results from classical and quantum computations happens only in the end.
arXiv Detail & Related papers (2022-09-12T15:47:44Z) - QSAN: A Near-term Achievable Quantum Self-Attention Network [73.15524926159702]
Self-Attention Mechanism (SAM) is good at capturing the internal connections of features.
A novel Quantum Self-Attention Network (QSAN) is proposed for image classification tasks on near-term quantum devices.
arXiv Detail & Related papers (2022-07-14T12:22:51Z) - Interactive Protocols for Classically-Verifiable Quantum Advantage [46.093185827838035]
"Interactions" between a prover and a verifier can bridge the gap between verifiability and implementation.
We demonstrate the first implementation of an interactive quantum advantage protocol, using an ion trap quantum computer.
arXiv Detail & Related papers (2021-12-09T19:00:00Z) - Characterization and stability measurement of deployed multicore fibers
for quantum applications [50.591267188664666]
We characterize for the first time, in terms of phase stability, multiple strands of a 4-core multicore fiber installed underground in the city of L'Aquila.
We investigate the possibility of using such an infrastructure to implement quantum-enhanced schemes, such as high-dimensional quantum key distribution, quantum-based environmental sensors.
arXiv Detail & Related papers (2021-03-11T18:24:59Z) - Unbounded randomness from uncharacterized sources [0.0]
In Device-Independent and Semi-Device-Independent scenarios, randomness is certified using projective measurements.
We propose a new Source-Device-Independent protocol, based on Positive Operator Valued Measurement (POVM)
We experimentally demonstrate our method with a compact and simple photonic setup that employs polarization-encoded qubits and POVM up to 6 outcomes.
arXiv Detail & Related papers (2020-10-12T15:54:22Z) - Multi-core fiber integrated multi-port beamsplitters for quantum
information processing [0.0]
We report on the production of high-quality $N times N$ multi-port beamsplitters based on a new scheme for manipulating multi-core optical fibers.
Thanks to the high visibilities observed, we surpass the 1-bit limit of binary protocols and attain 1.23 bits of certified private randomness per experimental round.
arXiv Detail & Related papers (2020-01-29T19:21:26Z) - Experimental characterisation of unsharp qubit observables and
sequential measurement incompatibility via quantum random access codes [0.0]
We report an experimental implementation of unsharp qubit measurements in a sequential communication protocol.
The protocol involves three parties; the first party prepares a qubit system, the second party performs operations which return a classical and quantum outcome, and the latter is measured by the third party.
arXiv Detail & Related papers (2020-01-14T13:37:04Z)
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.