Proposal of a two-qubit quantum phase gate for quantum photonic integrated circuits
arXiv:1207.4912 · doi:10.1103/PhysRevA.86.063815
Abstract
We propose a protocol for two-qubit quantum phase gate based upon reflection of photon pulses from a quantum dot in a cavity. Depending on the state of the quantum dot the reflected photons acquire a conditional phase shift. The key ingredient is the ultrafast control of the quantum dot energies by electric fields, which allows for tuning the exciton and biexciton successively into resonance with the cavity mode. The complete dynamics of the gate are simulated revealing a fidelity of about 0.9. The proposed scheme uses position-coding and is therefore well suited to the implementation in an integrated photonic quantum processor.
5 pages, 3 figures
References in corpus (22)
- Quantum Computing
- Photonic quantum technologies
- Review: Semiconductor Quantum Light Sources
- Entangled Photon Pairs from Semiconductor Quantum Dots
- Scalable photonic quantum computation through cavity-assisted interaction
- Giant optical Faraday rotation induced by a single electron spin in a quantum dot: Applications to entangling remote spins via a single photon
- Experimental realization of highly-efficient broadband coupling of single quantum dots to a photonic crystal waveguide
- CNOT and Bell-state analysis in the weak-coupling cavity QED regime
- Entangling photons using a charged quantum dot in a microcavity
- Manipulating exciton fine-structure in quantum dots with a lateral electric field
- Cavity QED and quantum information processing with "hot" trapped atoms
- Electrical control of spontaneous emission and strong coupling for a single quantum dot
- A Waveguide-Coupled On-Chip Single Photon Source
- Fast Electrical Control of a Quantum Dot Strongly Coupled to a Nano-resonator
- Entangled photon pairs produced by a quantum dot strongly coupled to a microcavity
- Dispersive properties and giant Kerr non-linearities in Dipole Induced Transparency
- Flying microwave qubits with nearly perfect transfer efficiency
- Controlling the charge environment of single quantum dots in a photonic-crystal cavity
- Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides
- High fidelity transfer of an arbitrary quantum state between harmonic oscillators
- Entangled photons from a strongly coupled quantum dot-cavity system
- Single photon absorption and dynamic control of a coupled quantum dot-cavity system
Cited by in corpus (4)
- Dynamically controlling the emission of single excitons in photonic crystal cavities
- Limitations of two-level emitters as non-linearities in two-photon controlled phase gates
- Controlled-Phase Gate by Dynamic Coupling of Photons to a Two-Level Emitter
- Tunable quantum logic gate on photonic qubits with a ladder emitter