Entanglement of a nuclear spin qubit register in silicon photonics
Awschalom, D. D., Hanson, R., Wrachtrup, J. & Zhou, B. B. Quantum technologies with optically interfaced solid-state spins.…
Chinese scientists create super stable building block for quantum computers
Chinese physicist Pan Jianwei and his team have created a “quantum Lego block” that refuses to fall apart…
Learning quantum states of continuous-variable systems
Trace distance The trace distance between two quantum states ρ1 and ρ2 is defined as $${d}_{{\rm{tr}}}(\;{\rho }_{1},{\rho }_{2}):=\frac{1}{2}\|{\rho…
Strong coupling of a superconducting flux qubit to single bismuth donors
In this work, we couple spins to a highly non-linear circuit with huge current quantum fluctuations18,19,20. This circuit…
Effective descriptions of bosonic systems can be considered complete
Bosonic quantum information theory Quantum information theory with bosonic systems typically involves modeling unbounded operators over infinite-dimensional Hilbert…
On-chip quantum interference of indistinguishable single photons from integrated independent molecules
Pelucchi, E. et al. The potential and global outlook of integrated photonics for quantum technologies. Nat. Rev. Phys.…
The generalized quantum Stein’s lemma and the second law of quantum resource theories
Nielsen, M. A. & Chuang, I. L. Quantum Computation and Quantum Information: 10th Anniversary Edition (Cambridge Univ. Press,…
Spin environment of a superconducting qubit in high magnetic fields
In Fig. 1 we present the field resilient gralmonium qubit, fabricated from a single layer of grAl (cf. Fig. 1a),…
Observation of constructive interference at the edge of quantum ergodicity
Authors and Affiliations Google Research, Mountain View, CA, USA Dmitry A. Abanin, Rajeev Acharya, Laleh Aghababaie-Beni, Georg Aigeldinger, Ross Alcaraz, Igor Aleiner, Trond I.…
Classical theories of gravity produce entanglement
To illustrate this further, we now demonstrate how equation (4) leads to entanglement in a version of Feynman’s…