A conditional quantum phase gate between two 3-state atoms

Abstract

We propose a scheme for conditional quantum logic between two 3-state atoms that share a quantum data-bus such as a single mode optical field in cavity QED systems, or a collective vibrational state of trapped ions. Making use of quantum interference, our scheme achieves successful conditional phase evolution without any real transitions of atomic internal states or populating the quantum data-bus. In addition, it only requires common addressing of the two atoms by external laser fields.

8 figs

References in corpus (12)

• Quantum Mechanics helps in searching for a needle in a haystack
• Quantum Zeno subspaces
• Quantum Computing Using Dissipation to Remain in a Decoherence-Free Subspace
• Coupling a single atomic quantum bit to a high finesse optical cavity
• Vacuum-Stimulated Raman Scattering based on Adiabatic Passage in a High-Finesse Optical Cavity
• Quantum computation with trapped ions in an optical cavity
• Generating and probing a two-photon Fock state with a single atom in a cavity
• Trapping of Single Atoms with Single Photons in Cavity QED
• Quantum Information Processing in Strongly Detuned Optical Cavities
• Experimental demonstration of a technique to generate arbitrary quantum superposition states
• Experimental demonstration of a controlled-NOT wave-packet gate
• Dissipation-assisted quantum gates with cold trapped ions

Cited by in corpus (25)

• Cavity QED with optically transported atoms
• Generation of Atomic Cluster States through the Cavity Input-Output Process
• Entangled state preparation via dissipation-assisted adiabatic passages
• Arbitrary rotation and entanglement of flux SQUID qubits
• A n-qubit controlled phase gate with superconducting quantum interference devices coupled to a resonator
• Quantum logic gates using Stark shifted Raman transitions in a cavity
• Cooling atom-cavity systems into entangled states
• Robust Entanglement through Macroscopic Quantum Jumps
• Quantum jumps and spin dynamics of interacting atoms in a strongly coupled atom-cavity system
• Decoherence-free dynamical and geometrical entangling phase gates
• Decoherence-free creation of atom-atom entanglement in cavity via fractional adiabatic passage
• Robust high-fidelity teleportation of an atomic state through the detection of cavity decay
• Atom-photon entanglement generation and distribution
• Vacuum induced Stark shifts for quantum logic using a collective system in a high quality dispersive cavity
• Macroscopic quantum jumps and entangled state preparation
• A scheme for tunable quantum phase gate and effective preparation of graph-state entanglement
• Cavity-assisted controlled phase-flip gates
• Encoding a logical qubit into physical qubits
• Towards quantum computing with single atoms and optical cavities on atom chips
• Preparation of Knill-Lafamme-Milburn states based on superconducting qutrits
• The linear and nonlinear Jaynes-Cummings model for the multiphoton transition
• Entangled two cavity modes preparation via a two-photon process
• A triple point in 3-level systems
• Controlled Unitary Operation between Two Distant Atoms
• Quantum Discord Dynamics for Two-Level Atom Initially in Thermal Equilibrium Interacting with n-Photon State