7 papers · 1 filter
The non-deterministic quantum logic operation and teleportation of a vacuum and single photon superposition state via parametric amplifiers
Xu-Bo Zou, K. Pahlke, W. Mathis
We firstly present an all-optical scheme to implement the non-deterministic quantum logic operation of Knill, Laflamme and Milburn (Nature, 409, 46-52(2001)). In our scheme, squeez…
Generation of arbitrary quantum state in a high-Q cavity
XuBo Zou, K. Pahlke, W. Mathis
We present a scheme to generate arbitrary superposition of the Fock states in a high-Q cavity. This proposal is based on a sequence of laser pulses, which are tuned appropriately t…
The generation of an entangled four-photon state from two pairs of entangled two-photon states by using linear optical elements
XuBo Zou, K. Pahlke, W. Mathis
We present a scheme to produce an entangled four-photon state from two pairs of entangled two-photon states. Such entangled four-photon states are equivalent to the quantum state o…
Quantum computation with trapped ions in strongly detuned optical cavity
XuBo Zou, K. Pahlke, W. Mathis
We propose a scheme to implement quantum phase gate for two ions trapped in optical cavity. It is shown that quantum phase gate can be implemented by applying a laser addressin…
Continuous variable quantum cloning via the Cavity QED with trapped ions
XuBo Zou, K. Pahlke, W. Mathis
We present a feasible scheme to use trapped ions Cavity QED system to implement optimal cloning machine of coherent state. In present scheme, as the ouput of the clone mac…
The entanglement concentration and purification for entangled polarization photon state
XuBo Zou, K. Pahlke, W. Mathis
We present a concentration and purification scheme for nonmaximally entangled pure and mixed porization entangled state. We firstly show that two distant parties Alice and Bob firs…