Search results for "witness operator"

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Scalable and effective multi-level entangled photon states: a promising tool to boost quantum technologies

2021

Abstract Multi-level (qudit) entangled photon states are a key resource for both fundamental physics and advanced applied science, as they can significantly boost the capabilities of novel technologies such as quantum communications, cryptography, sensing, metrology, and computing. The benefits of using photons for advanced applications draw on their unique properties: photons can propagate over long distances while preserving state coherence, and they possess multiple degrees of freedom (such as time and frequency) that allow scalable access to higher dimensional state encoding, all while maintaining low platform footprint and complexity. In the context of out-of-lab use, photon generation…

Photonintegrated and cost-efficient photonic platformComputer sciencephoton cluster statesQC1-999Context (language use)witness operatorsQuantum entanglementQuantum channelquantum photonicsphoton cluster stateRobustness (computer science)Electronic engineeringElectrical and Electronic EngineeringQCbusiness.industryexperimentally feasible entanglement characterizationPhysicsSettore ING-INF/02 - Campi Elettromagneticicomplex entanglementAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsQuantum technologyintegrated and cost-efficient photonic platformsPhotonicsbusinessquantum photonicBiotechnologyCoherence (physics)
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INVESTIGATION, REALIZATION, AND ENTANGLEMENT CHARACTERIZATION OF COMPLEX OPTICAL QUANTUM STATES

2020

high-dimensional one-way quantum processingSettore FIS/02 - Fisica Teorica Modelli E Metodi Matematicimultipartite d-level cluster statewitness operatortime- and frequency-entanglementSettore FIS/01 - Fisica Sperimentalequantum mechanicentanglementcomplex entangled photon statehigh-dimensional frequency-entangled photon pair
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