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Variational quantum algorithm for enhanced continuous variable optical phase sensing
Jens A. H. Nielsen, Mateusz Kicinski, Tummas N. Arge +7
Variational quantum algorithms (VQAs) are hybrid quantum-classical approaches used for tackling a wide range of problems on noisy intermediate-scale quantum (NISQ) devices. Testing…
Multi-Gbps quantum randomness source based on direct detection and vacuum states
Dino Solar Nikolic, Cosmo Lupo, Runjia Zhang +3
Quantum random number generators (QRNGs) based on quadrature measurements of the vacuum have so far used balanced homodyne detection to obtain a source of high entropy. Here we pro…
Quantum key distribution for data center security -- a feasibility study
Nitin Jain, Ulrich Hoff, Marco Gambetta +2
Data centers are nowadays referred to as the digital world's cornerstone. Quantum key distribution (QKD) is a method that solves the problem of distributing cryptographic keys betw…
Fully guided and phase locked Ti:PPLN waveguide squeezing for applications in quantum sensing
Renato Domeneguetti, Michael Stefszky, Harald Herrmann +4
This work reports a fully guided setup for single-mode squeezing generation on integrated titanium-indiffused periodically poled nonlinear resonators. A continuous wave laser beam…
Continuous-Variable Quantum Key Distribution at 10 GBaud using an Integrated Photonic-Electronic Receiver
Adnan A. E. Hajomer, Cedric Bruynsteen, Ivan Derkach +6
Quantum key distribution (QKD) is a well-known application of quantum information theory that guarantees information-theoretically secure key exchange. As QKD becomes more and more…
Long-distance continuous-variable quantum key distribution over 100 km fiber with local local oscillator
Adnan A. E. Hajomer, Ivan Derkach, Nitin Jain +3
Quantum key distribution (QKD) enables two remote parties to share encryption keys with security based on the laws of physics. Continuous variable (CV) QKD with coherent states and…
Squeezed Light Coexistence with Classical Communication over 10 km Optical Fiber
Adnan A. E. Hajomer, Huy Q. Nguyen, Melis Pahalı +2
We report the first coexistence experiment of 1550 nm single-mode squeezed states of light with a 1310 nm classical telecom channel over a 10 km fiber channel while measuring squee…
High-rate continuous-variable measurement device-independent quantum key distribution with finite-size security
Adnan A. E. Hajomer, Ulrik L Andersen, Tobias Gehring
Building scalable and secure quantum networks requires advanced quantum key distribution (QKD) protocols that support multi-user connectivity. Continuous-variable (CV) measurement-…