5 papers
Rigorous no-go theorems for heralded linear-optical state generation tasks
Deepesh Singh, Ryan J. Marshman, Luis Villegas-Aguilar +2
A major challenge in photonic quantum technologies is developing strategies to prepare suitable discrete-variable quantum states using simple input states, linear optics, and auxil…
Enhancing Long-distance Continuous-variable Quantum-key-distribution with an Error-correcting Relay
S. Nibedita Swain, Ryan J. Marshman, Josephine Dias +2
Noiseless linear amplifiers (NLAs) serve as an effective means to enable long-distance continuous-variable (CV) quantum key distribution (QKD), even under realistic conditions with…
Noise-reduction of multimode Gaussian Boson Sampling circuits via Unitary Averaging
S. Nibedita Swain, Ryan J. Marshman, Alexander S. Solntsev +1
We improve Gaussian Boson Sampling (GBS) circuits by integrating the unitary averaging (UA) protocol, previously demonstrated to protect unknown Gaussian states from phase errors […
A Spin-Based Pathway to Testing the Quantum Nature of Gravity
Sougato Bose, Anupam Mazumdar, Roger Penrose +52
A key open problem in physics is the correct way to combine gravity (described by general relativity) with everything else (described by quantum mechanics). This problem suggests t…
Coherently mitigating boson samplers with stochastic errors
Deepesh Singh, Ryan J. Marshman, Nathan Walk +3
Sampling experiments provide a viable route to show quantum advantages of quantum devices over classical computers in well-defined computational tasks. However, quantum devices suc…