Feedforward-enhanced Fock state conversion with linear optics
arXiv:2004.14436 · doi:10.1364/OE.385609
Abstract
Engineering quantum states of light represents a crucial task in the vast majority of photonic quantum technology applications. Direct manipulation of the number of photons in the light signal, such as single-photon subtraction and addition, proved to be an efficient strategy for the task. Here we propose an adaptive multi-photon subtraction scheme where a particular subtraction task is conditioned by all previous subtraction events in order to maximize the probability of successful subtraction. We theoretically illustrate this technique on the model example of conversion of Fock states via photon subtraction. We also experimentally demonstrate the core building block of the proposal by implementing a feedforward-assisted conversion of two-photon state to a single-photon state. Our experiment combines two elementary photon subtraction blocks where the splitting ratio of the second subtraction beam splitter is affected by the measurement result from the first subtraction block in real time using an ultra-fast feedforward loop. The reported optimized photon subtraction scheme applies to a broad range of photonic states, including highly nonclassical Fock states and squeezed light, advancing the photonic quantum toolbox.
11 pages, 5 figures
References in corpus (37)
- Detecting Single Infrared Photons with 93% System Efficiency
- Quantum jumps of light recording the birth and death of a photon in a cavity
- Generation of a superposition of odd photon number states for quantum information networks
- Real-time quantum feedback prepares and stabilizes photon number states
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Progressive field-state collapse and quantum non-demolition photon counting
- Non-gaussian statistics from individual pulses of squeezed light
- High-speed linear optics quantum computing using active feed-forward
- Increasing entanglement between Gaussian states by coherent photon subtraction
- Non-Gaussian entanglement distillation for continuous variables
- Controllable generation of highly nonclassical states from nearly pure squeezed vacua
- Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum
- A high-fidelity noiseless amplifier for quantum light states
- Breeding the optical Schroedinger's cat state
- Scalable boson sampling with a single-photon device
- Generating superposition of up-to three photons for continuous variable quantum information processing
- Remote preparation of a single-mode photonic qubit by measuring field quadrature noise
- Quantum-optical state engineering up to the two-photon level
- Noise-Powered Probabilistic Concentration of Phase Information
- Experimental demonstration of bosonic commutation relation via superpositions of quantum operations on thermal light fields
- Optical synthesis of large-amplitude squeezed coherent-state superpositions with minimal resources
- Artificial atoms can do more than atoms: Deterministic single photon subtraction from arbitrary light fields
- Engineering quantum operations on traveling light beams by multiple photon addition and subtraction
- Optical continuous-variable qubit
- Experimental generation of multi-photon Fock states
- Distillation of the two-mode squeezed state
- Extraction of a single photon from an optical pulse
- Experimental demonstration of a Hadamard gate for coherent state qubits
- Elementary gates for quantum information with superposed coherent states
- Accurate detection of arbitrary photon statistics
- High-efficiency WSi superconducting nanowire single-photon detectors for quantum state engineering in the near infrared
- Measurement-induced strong Kerr nonlinearity for weak quantum states of light
- A high-speed tunable beam splitter for feed-forward photonic quantum information processing
- Universal state orthogonalizer and qubit generator
- Removal of a single photon by adaptive absorption
- Adaptive loop-based subtraction of a single photon from a traveling beam of light
- Fully tunable and switchable coupler for photonic routing in quantum detection and modulation