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6 papers · 2 filters
Thermal effect on mixed state geometric phases for neutrino propagation in a magnetic field
Da-Bao Yang, Ji-Xuan Hou, Ku Meng
In astrophysical environments, neutrinos may propagate over a long distance in a magnetic field. In the presence of a rotating magentic field, the neutrino spin can flip from left-…
Geometric phases for two-mode squeezed state
Da-Bao Yang, Ji-Xuan Hou
Although the geometric phase for one-mode squeezed state had been studied in detail, the counterpart for two-mode squeezed state is vacant. It is be evaluated explicitly in this pa…
Experimental quantum-walk revival with a time-dependent coin
Peng Xue, Rong Zhang, Hao Qin +4
We demonstrate a quantum walk with time-dependent coin bias. With this technique we realize an experimental single-photon one-dimensional quantum walk with a linearly-ramped time-d…
Experimental generalized contextuality with single-photon qubits
Xiang Zhan, Eric G. Cavalcanti, Jian Li +4
Contextuality is a phenomenon at the heart of the quantum mechanical departure from classical behaviour, and has been recently identified as a resource in quantum computation. Expe…
Properties of long quantum walks in one and two dimensions
Hao Luo, Peng Xue
The quantum walk (QW) is the term given to a family of algorithms governing the evolution of a discrete quantum system and as such has a founding role in the study of quantum compu…
Realization of single-qubit positive operator-valued measurement via a one-dimensional photonic quantum walk
Zhihao Bian, Jian Li, Hao Qin +4
We perform generalized measurements of a qubit by realizing the qubit as a coin in a photonic quantum walk and subjecting the walker to projective measurements. Our experimental te…