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Genuine Tripartite Strong Coupling in a Superconducting-Spin Hybrid Quantum System
Yingqiu Mao, Han-Yu Ren, Zi-Yi Liu +12
We demonstrate genuine tripartite strong coupling in a solid-state hybrid quantum system comprising a superconducting transmon qubit, a fixed-frequency coplanar-waveguide resonator…
Loophole-free Bell-inequality violation between atomic states in cavity-QED systems mediated by hybrid atom-light entanglement
Pei-Zhe Li, Soumyakanti Bose, Hyunseok Jeong +3
We present a feasible and scalable approach to testing Bell nonlocality and implementing device-independent quantum key distribution (DI-QKD) between distant atomic states in cavit…
Integrated Generation and Purification of Entangled Coherent States for Non-Gaussian Teleportation
Ananga Mohan Datta, William J. Munro, Nicolo Lo Piparo +1
Entangled coherent states (ECS) provide a powerful non-Gaussian resource for continuous-variable quantum communication, but their generation in scalable architectures remains chall…
Application and quantum properties of superpositions of oppositely squeezed states
Hiroo Azuma, William J. Munro, Kae Nemoto
We show that superpositions of oppositely squeezed states -- non-Gaussian Schr{ö}dinger-cat-like states -- exhibit enhanced nonclassical features and provide an entanglement advant…
Quantum phase transitions in the multiphoton Jaynes-Cummings-Hubbard model
Hiroo Azuma, William J. Munro, Kae Nemoto
We explore quantum phase transitions in the multiphoton Jaynes-Cummings-Hubbard model (JCHM). Using the mean-field approximation, we demonstrate that the multiphoton JCHM exhibits…
Quality of Service in aggregated quantum networks
Nicolò Lo Piparo, William J. Munro, Kae Nemoto
Future quantum networks will enable the interconnection of multiple users distributed across vast geographic distances. Due to these large separations and limited physical resource…