Long-lived entanglement with pulsed-driven initially entangled qubit pair
نویسندگان
چکیده
منابع مشابه
Entanglement spectrum and boundary theories with projected entangled-pair states
J. Ignacio Cirac,1 Didier Poilblanc,2 Norbert Schuch,3 and Frank Verstraete4 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany 2Laboratoire de Physique Théorique, CNRS and Université de Toulouse, F-31062 Toulouse, France 3Institute for Quantum Information, California Institute of Technology, MC 305-16, Pasadena, California 91125, USA 4Vienna Center for Qua...
متن کاملMulti-Qubit Systems: Highly Entangled States and Entanglement Distribution
A comparison is made of various searching procedures, based upon different entanglement measures or entanglement indicators, for highly entangled multi-qubits states. In particular, our present results are compared with those recently reported by Brown et al. [J. Phys. A: Math. Gen. 2005 38 1119]. The statistical distribution of entanglement values for the aforementioned multi-qubit systems is ...
متن کاملLong-lived qubit memory using atomic ions.
We demonstrate experimentally a robust quantum memory using a magnetic-field-independent hyperfine transition in 9Be+ atomic ion qubits at a magnetic field B approximately = 0.01194 T. We observe that the single physical qubit memory coherence time is greater than 10 s, an improvement of approximately 5 orders of magnitude from previous experiments with 9Be+. We also observe long coherence time...
متن کاملLong-range Cooper pair splitter with high entanglement production rate
Cooper pairs in the superconductor are a natural source of spin entanglement. The existing proposals of the Cooper pair splitter can only realize a low efficiency of entanglement production, and its size is constrained by the superconducting coherence length. Here we show that a long-range Cooper pair splitter can be implemented in a normal metal-superconductor-normal metal (NSN) junction by dr...
متن کاملQubit Entanglement Breaking Channels
This paper continues the study of stochastic maps, or channels, for which (I ⊗Φ)(Γ) is always separable in the case of qubits. We give a detailed description of entanglement-breaking qubit channels, and show that such maps are precisely the convex hull of those known as classical-quantum channels. We also review the complete positivity conditions in a canonical parameterization and show how the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Quantum Information
سال: 2014
ISSN: 0219-7499,1793-6918
DOI: 10.1142/s0219749914500038