Arbitrary Multi-Qubit Generation

Abstract

We propose and analyse a scheme for single-rail-encoded arbitrary multi-qubit quantum-state generation to provide a versatile tool for quantum optics and quantum information applications. Our scheme can be realized, for small numbers of qubits, with current technologies using single photon inputs, passive linear optics, and heralding measurements. The particular examples of two- and three-qubit cluster states are studied in detail. We show that such states can be prepared with a high probability of success. Our analysis quantifies the effects of experimentally relevant imperfections and inefficiencies. The general case of arbitrary N-qubit preparation is discussed and some interesting connections to the boson sampling problem are given.

References in corpus (13)

• The Quantum Internet
• Resource-efficient linear optical quantum computation
• Experimental entanglement of six photons in graph states
• Heralded Generation of Ultrafast Single Photons in Pure Quantum States
• Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
• Generating superposition of up-to three photons for continuous variable quantum information processing
• Bright source of spectrally uncorrelated polarization-entangled photons with nearly single-mode emission
• Quantum State Orthogonalization and a Toolset for Quantum Optomechanical Phonon Control
• Experimental access to higher-dimensional entangled quantum systems using integrated optics
• Multiboson Correlation Interferometry with arbitrary single-photon pure states
• General linear-optical quantum state generation scheme: Applications to maximally path-entangled states
• Adaptive Phase Measurements in Linear Optical Quantum Computation
• Generation and tomography of arbitrary qubit states in a transient collective atomic excitation