5 papers · 1 filter
Measuring the parity of an -qubit state
B. Zeng, D. L. Zhou, L. You
We present a scheme for a projective measurement of the parity operator of -qubits. Our protocol uses a single ancillary qubit, or a probe qubit, a…
Quantum information cannot be split into complementary parts
D. L. Zhou, B. Zeng, L. You
We prove a new impossibility for quantum information (the no-splitting theorem): an unknown quantum bit (qubit) cannot be split into two complementary qubits. This impossibility, t…
Entanglement and spin squeezing properties for three bosons in two modes
B. Zeng, D. L. Zhou, Z. Xu +1
We discuss the canonical form for a pure state of three identical bosons in two modes, and classify its entanglement correlation into two types, the analogous GHZ and the W types a…
Encoding a logical qubit into physical qubits
B. Zeng, D. L. Zhou, Z. Xu +2
We propose two protocols to encode a logical qubit into physical qubits relying on common types of qubit-qubit interactions in as simple forms as possible. We comment on its experi…
Quantum computation based on d-level cluster states
D. L. Zhou, B. Zeng, Z. Xu +1
The concept of qudit (a d-level system) cluster state is proposed by generalizing the qubit cluster state (Phys. Rev. Lett. \textbf{86}, 910 (2001)) according to the finite dimensi…