6 papers · 1 filter
Wave--particle transition and quantum Zeno effect in which-way experiments with a superconducting quantum processor
Shiyu Wang, Zhiguang Yan, Clemens Gneiting +3
Wave--particle duality demonstrates the peculiar nature of quantum mechanics. In which-way experiments, depending on the measurement scheme, a particle exhibits either wave-like or…
Quantum circuits for exact unitary -designs and applications to higher-order randomized benchmarking
Yoshifumi Nakata, Da Zhao, Takayuki Okuda +9
A unitary -design is a powerful tool in quantum information science and fundamental physics. Despite its usefulness, only approximate implementations were known for general .…
Verification of a resetting protocol for an uncontrolled superconducting qubit
Ming Gong, Feihu Xu, Zheng-Da Li +20
Quantum resetting protocols allow a quantum system to be sent to a state in the past by making it interact with quantum probes when neither the free evolution of the system nor the…
Genuine 12-qubit entanglement on a superconducting quantum processor
Ming Gong, Ming-Cheng Chen, Yarui Zheng +20
We report the preparation and verification of a genuine 12-qubit entanglement in a superconducting processor. The processor that we designed and fabricated has qubits lying on a 1D…
Experimental Realization of Nonadiabatic Shortcut to Non-Abelian Geometric Gates
Tongxing Yan, Bao-Jie Liu, Kai Xu +10
When a quantum system is driven adiabatically through a parametric cycle in a degenerate Hilbert space, the state would acquire a non-Abelian geometric phase, which is stable and f…
An efficient and compact quantum switch for quantum circuits
Yulin Wu, Li-Ping Yang, Yarui Zheng +11
The engineering of quantum devices has reached the stage where we now have small scale quantum processors containing multiple interacting qubits within them. Simple quantum circuit…