A5066589681- Quantum Information and Cryptography
- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Mechanical and Optical Resonators
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Quantum optics and atomic interactions
- Diamond and Carbon-based Materials Research
- Semiconductor Lasers and Optical Devices
- Black Holes and Theoretical Physics
- Cosmology and Gravitation Theories
- Quantum and electron transport phenomena
- Photonic Crystals and Applications
- Advanced Optical Sensing Technologies
- Particle physics theoretical and experimental studies
- Electronic and Structural Properties of Oxides
- Geophysical Methods and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Electrodynamics and Casimir Effect
- Computability, Logic, AI Algorithms
- Quantum, superfluid, helium dynamics
- Chaos-based Image/Signal Encryption
- Infrared Target Detection Methodologies
Mitre (United States)
2011-2025
Massachusetts Institute of Technology
2021-2022
Eaton (United States)
2003-2012
Eaton (United Kingdom)
2007
Royal Military College of Canada
2005
Institute For Defense Analyses
1994
University of Maryland, College Park
1991-1992
California Institute of Technology
1988-1989
The University of Texas at Austin
1984-1986
Recent advances in photonic integrated circuits (PICs) have enabled a new generation of "programmable many-mode interferometers" (PMMIs) realized by cascaded Mach Zehnder Interferometers (MZIs) capable universal linear-optical transformations on N input-output optical modes. PMMIs serve critical functions quantum information processing, quantum-enhanced sensor networks, machine learning and other applications. However, PMMI implementations reported to date rely thermo-optic phase shifters,...
Color centers (CCs) in nanostructured diamond are promising for optically linked quantum technologies. Scaling to useful applications motivates architectures meeting the following criteria: C1 individual optical addressing of spin qubits; C2 frequency tuning spin-dependent transitions; C3 coherent control; C4 active photon routing; C5 scalable manufacturability; and C6 low on-chip power dissipation cryogenic operations. Here, we introduce an architecture that simultaneously achieves C1–C6....
Visible-wavelength very large-scale integration (VLSI) photonic circuits have potential to play important roles in quantum information and sensing technologies. The realization of scalable, high-speed, low-loss mesh depends on reliable well-engineered visible components. Here we report a low-voltage optical phase shifter based piezo-actuated mechanical cantilevers, fabricated CMOS compatible, 200 mm wafer-based photonics platform. We show linear amplitude modulation with 6 V$_{\pi}$-cm...
Abstract Large-scale generation of quantum entanglement between individually controllable qubits is at the core computing, communications, and sensing. Modular architectures remotely-connected technologies have been proposed for a variety physical qubits, with demonstrations reported in atomic all-photonic systems. However, an open challenge these lies constructing high-speed high-fidelity reconfigurable photonic networks optically-heralded among target qubits. Here we introduce programmable...
Reliable operation of photonic integrated circuits at cryogenic temperatures would enable new capabilities for emerging computing platforms, such as quantum technologies and low-power computing. The silicon-on-insulator platform is a highly promising approach to developing large-scale due its exceptional manufacturability, CMOS compatibility, high component density. Fast, efficient, low-loss modulation in silicon, however, remains an outstanding challenge, particularly without the addition...
A central goal in creating long-distance quantum networks and distributed computing is the development of interconnected individually controlled qubit nodes. Atom-like emitters diamond have emerged as a leading system for optically networked memories, motivating visible-spectrum, multi-channel photonic integrated circuit (PIC) systems scalable atom control. However, it has remained an open challenge to realize optical programmability with layer that can achieve high detection probability...
The phase estimation performance of photonic N00N states propagating in an attenuating medium is analyzed. It shown that the Heisenberg limit never achieved and attenuated separable state N photons will actually produce a better estimate than equally unless transmittance sufficiently high. Thus, for most practical applications with realistic attenuation, N00N-state-based performs worse standard quantum limit. This deficit becomes more pronounced as number signal increases.
Advances in laser technology have driven discoveries atomic, molecular, and optical (AMO) physics emerging applications, from quantum computers with cold atoms or ions, to networks solid-state color centers. This progress is motivating the development of a new generation control systems that can manipulate light field high fidelity at wavelengths relevant for AMO applications. These are characterized by criteria: (C1) operation design wavelength choice visible (VIS) near-infrared (IR)...
We perform a comprehensive analysis of practical quantum cryptography (QC) systems implemented in actual physical environments via either free-space or fiber-optic cable channels for ground-ground, ground-satellite, air-satellite and satellite-satellite links. (1) obtain universal expressions the effective secrecy capacity rate QC taking into account three important attacks on individual bits, including explicit closed-form requisite amount privacy amplification. Our also includes...
Nanophotonic resonators are central to numerous applications, from efficient spin–photon interfaces laser oscillators and precision sensing. A leading approach consists of photonic crystal (PhC) cavities, which have been realized in a wide range dielectric materials. However, translating proof-of-concept devices into functional system entails number additional challenges, inspiring new approaches that combine with wavelength-scale confinement high quality factors; scalable integration...
We demonstrate a method of creating photonic two-dimensional cluster states that is considerably more efficient than previously proposed approaches. Our uses only local unitaries and type-I fusion operations. The increased efficiency our compared to constructions obtained by identifying exploiting equivalence properties inherent in states.
Abstract We propose an architecture for achieving high-fidelity deterministic quantum logic gates on dual-rail encoded photonic qubits by letting photons interact with a two-level emitter (TLE) inside optical cavity. The photon wave packets that define the qubit are preserved after interaction due to control process actively loads and unloads from cavity dynamically alters their effective coupling TLE. controls rely nonlinear mixing between modes enhanced strong externally modulated...
A central goal in many quantum information processing applications is a network of memories that can be entangled with each other while being individually controlled and measured high fidelity. This has motivated the development programmable photonic integrated circuits (PICs) spin using diamond color center spin-photon interfaces. However, this approach introduces challenge into microwave control individual spins within closely packed registers. Here, we present memory-integrated photonics...
Abstract Programmable photonic integrated circuits (PICs) are emerging as powerful tools for control of light, with applications in quantum information processing, optical range finding, and artificial intelligence. Low-power implementations these PICs involve micromechanical structures driven capacitively or piezoelectrically but often limited modulation bandwidth by mechanical resonances high operating voltages. Here we introduce a synchronous, micromechanically resonant design...
In this paper we utilize superoperator formalism to explore the entanglement evolution of four-qubit cluster states in a number decohering environments. A state is resource for performance an arbitrary single-logical-qubit rotation via measurement-based cluster-state quantum computation. We are specifically interested relationship between and fidelity with which can be implemented presence decoherence as will have important experimental ramifications. also note exhibition sudden death (ESD)...
We consider the viability of photonic N00N states for practical remote quantum sensing in realistic atmospheres. This is done by analyzing phase estimation performance N-photon propagating an attenuating medium. It shown that 1/N Heisenberg limit never achieved. Moreover, attenuated state will actually produce a worse estimate than equally separable unless transmittance medium sufficiently high. The threshold which perform better increases as number signal photons increases. amount photon...
Advances in laser technology have driven discoveries atomic, molecular, and optical (AMO) physics emerging applications, from quantum computers with cold atoms or ions, to networks solid-state color centers. This progress is motivating the development of a new generation "programmable control" systems, characterized by criteria (C1) visible (VIS) near-infrared (IR) wavelength operation, (C2) large channel counts extensible beyond 1000s individually addressable atoms, (C3) high intensity...