Entangling entanglement: coupling frequency and polarization of biphotons on demand ..read more

Error-mitigated fermionic classical shadows on noisy quantum devices ..read more

Reversibility of quantum resources through probabilistic protocols The problem of reversibility within general quantum resource theories is still an open one. Here, the authors prove that a reversible entanglement manipulation framework (and, consequently, the concept of entanglement entropy) can be formally established by adjusting the setting to allow for probabilistic operations ..read more

Fast joint parity measurement via collective interactions induced by stimulated emission Parity detection is essential in quantum error correction. Here, authors propose a reliable joint parity measurement (JPM) scheme inspired by stimulated emission and experimentally implement the weight-2(4) JPM scheme in a tunable coupling superconducting circuit, which shows comparable performance to the standard CNOT-gate based scheme ..read more

A call for responsible quantum technology The time has come to consider appropriate guardrails to ensure quantum technology benefits humanity and the planet. With quantum development still in flux, the science community shares a responsibility in defining principles and practices ..read more

How to experimentally evaluate the adiabatic condition for quantum annealing ..read more

Quantum mechanical rules for observed observers and the consistency of quantum theory ..read more

Fast pseudorandom quantum state generators via inflationary quantum gates ..read more

Nonlocality activation in a photonic quantum network Entangled local states can be made capable of violating Bell inequalities via nonlocality activation. Typical theoretical approaches require processing many copies of the original state and performing joint measurements on the ensemble. Here, instead, the authors experimentally demonstrate how to do so using a single copy of the state, broadcasting it to two spatially separated parties within a three-node network ..read more

Satellite-based entanglement distribution and quantum teleportation with continuous variables Quantum networks require a synergistic integration of terrestrial infrastructure employing optical fibers and wireless free-space communication technologies. In their study, the authors numerically investigate a satellite-based entanglement distribution and quantum teleportation across diverse freespace communication channels, such as diffraction or turbulence, finding that entanglement preservation endures throughout the downlink (satellite-to-ground) propagation for over 1000 km ..read more