Coherent control of a solid-state quantum bit with few-photon pulses
arXiv:1512.04725
Abstract
Single photons are the natural link between the nodes of a quantum network: they coherently propagate and interact with many types of quantum bits including natural and artificial atoms. Ideally, one atom should deterministically control the state of a photon and vice-versa. The interaction between free space photons and an atom is however intrinsically weak and many efforts have been dedicated to develop an efficient interface. Recently, it was shown that the propagation of light can be controlled by an atomic resonance coupled to a cavity or a single mode waveguide. Here we demonstrate that the state of a single artificial atom in a cavity can be efficiently controlled by a few-photon pulse. We study a quantum dot optimally coupled to an electrically-controlled cavity device, acting as a near optimal one-dimensional atom. By monitoring the exciton population through resonant fluorescence, we demonstrate Rabi oscillations with a -pulse of only 3.8 photons on average. The probability to flip the exciton quantum bit with a single photon Fock state is calculated to reach 55% in the same device.
References in corpus (18)
- The Quantum Internet
- Interfacing single photons and single quantum dots with photonic nanostructures
- Theory of Photon Blockade by an Optical Cavity with One Trapped Atom
- Heralded entanglement between solid-state qubits separated by 3 meters
- An Elementary Quantum Network of Single Atoms in Optical Cavities
- Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
- All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon
- Ultrafast all-optical switching by single photons
- A Single-Atom Quantum Memory
- A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
- Controlled light-matter coupling for a single quantum dot embedded in a pillar microcavity using far-field optical lithography
- Control and coherence of the optical transition of single defect centers in diamond
- Quantum-state transfer from an ion to a photon
- Optical nonlinearity for few-photon pulses on a quantum dot-pillar cavity device
- Excitation of a single atom with exponentially rising light pulses
- Resonant excitonic emission of a single quantum dot in the Rabi regime
- Single-shot initialization of electron spin in a quantum dot using a short optical pulse
- Free space interference experiments with single photons and single ions