Could light harvesting complexes exhibit non-classical effects at room temperature? (2009)
Wilde, Mark M., McCracken, James M., Mizel, Ari
Mounting experimental and theoretical evidence suggests that coherent quantum effects play a role in the efficient transfer of an excitation from a chlorosome antenna to a reaction center in the...
Wilde, Mark M., Hsieh, Min-Hsiu
We introduce a new protocol, the channel-state coding protocol, to quantum Shannon theory. This protocol generates entanglement between a sender and receiver by coding for a noisy quantum channel...
On the logical operators of quantum codes (2009)
I show how applying a symplectic Gram-Schmidt orthogonalization to the normalizer of a quantum code gives a different way of determining the code's logical operators. This approach may be more...
Quantum Shift Register Circuits (2009)
A quantum shift register circuit acts on a set of input qubits and memory qubits, outputs a set of output qubits and updated memory qubits, and feeds the memory back into the device for the next...
Public and private communication with a quantum channel and a secret key (2009)
Hsieh, Min-Hsiu, Wilde, Mark M.
We consider using a secret key and a noisy quantum channel to generate noiseless public communication and noiseless private communication. The optimal protocol for this setting is the...
Hsieh, Min-Hsiu, Wilde, Mark M.
We give optimal trade-offs between classical communication, quantum communication, and entanglement for processing information in the Shannon-theoretic setting. We first prove a "unit-resource"...
Extra Shared Entanglement Reduces Memory Demand in Quantum Convolutional Coding (2008)
We show how extra entanglement shared between sender and receiver reduces the memory requirements for a general entanglement-assisted quantum convolutional code. We construct quantum convolutional...
The Classically-Enhanced Father Protocol (2008)
Hsieh, Min-Hsiu, Wilde, Mark M.
The classically-enhanced father protocol is an optimal protocol for a sender to transmit both classical and quantum information to a receiver by exploiting preshared entanglement and a large number...
Localized closed timelike curves can perfectly distinguish quantum states (2008)
Brun, Todd A., Harrington, Jim, Wilde, Mark M.
We show that qubits traveling along closed timelike curves are a resource that a party can exploit to distinguish perfectly any set of quantum states. As a result, an adversary with access to closed...
Linear-Optical Hyperentanglement-Assisted Quantum Error-Correcting Code (2008)
Wilde, Mark M., Uskov, Dmitry B.
We propose a linear-optical implementation of a hyperentanglement-assisted quantum error-correcting code. The code is hyperentanglement-assisted because the shared entanglement resource is a photonic...
Quantum Convolutional Coding with Shared Entanglement: General Structure (2008)
We present a general theory of entanglement-assisted quantum convolutional coding. The codes have a convolutional or memory structure, they assume that the sender and receiver share noiseless...
Protecting Quantum Information with Entanglement and Noisy Optical Modes (2008)
We incorporate active and passive quantum error-correcting techniques to protect a set of optical information modes of a continuous-variable quantum information system. Our method uses ancilla modes,...
Quantum Coding with Entanglement (2008)
Quantum error-correcting codes will be the ultimate enabler of a future quantum computing or quantum communication device. This theory forms the cornerstone of practical quantum information theory....
Quantum Coding with Entanglement (2008)
Quantum error-correcting codes will be the ultimate enabler of a future quantum computing or quantum communication device. This theory forms the cornerstone of practical quantum information theory....
Optimal Entanglement Formulas for Entanglement-Assisted Quantum Coding (2008)
We provide several formulas that determine the optimal number of entangled bits (ebits) that a general entanglement-assisted quantum code requires. Our first theorem gives a formula that applies to...
Encoding One Logical Qubit Into Six Physical Qubits (2008)
Shaw, Bilal, Wilde, Mark M., Oreshkov, Ognyan, Kremsky, Isaac, Lidar, Daniel A.
We discuss two methods to encode one qubit into six physical qubits. Each of our two examples corrects an arbitrary single-qubit error. Our first example is a degenerate six-qubit quantum...
Quantum Forbidden-Interval Theorems for Stochastic Resonance (2008)
We extend the classical forbidden-interval theorems for a stochastic-resonance noise benefit in a nonlinear system to a quantum-optical communication model and a continuous-variable quantum key...
Unified Quantum Convolutional Coding (2008)
We outline a quantum convolutional coding technique for protecting a stream of classical bits and qubits. Our goal is to provide a framework for designing codes that approach the ``grandfather''...
Can Classical Noise Enhance Quantum Transmission? (2007)
A modified quantum teleportation protocol broadens the scope of the classical forbidden-interval theorems for stochastic resonance. The fidelity measures performance of quantum communication. The...
Entanglement-Assisted Quantum Convolutional Coding (2007)
We show how to protect a stream of quantum information from decoherence induced by a noisy quantum communication channel. We exploit preshared entanglement and a convolutional coding structure to...
Coherent Communication with Linear Optics (2007)
Wilde, Mark M., Brun, Todd A., Dowling, Jonathan P., Lee, Hwang
We show how to implement several continuous-variable coherent protocols with linear optics. Noise can accumulate when implementing each coherent protocol with realistic optical devices. Our analysis...
Convolutional Entanglement Distillation (2007)
Wilde, Mark M., Krovi, Hari, Brun, Todd A.
We develop a theory of entanglement distillation that exploits a convolutional coding structure. We provide a method for converting an arbitrary classical binary or quaternary convolutional code into...
Entanglement-Assisted Quantum Error Correction with Linear Optics (2007)
Wilde, Mark M., Krovi, Hari, Brun, Todd A.
We construct a theory of continuous-variable entanglement-assisted quantum error correction. We present an example of a continuous-variable entanglement-assisted code that corrects for an arbitrary...
Coherent Communication with Continuous Quantum Variables (2006)
Wilde, Mark M., Krovi, Hari, Brun, Todd A.
The coherent bit (cobit) channel is a resource intermediate between classical and quantum communication. It produces coherent versions of teleportation and superdense coding. We extend the cobit...
Wilde, Mark M., Spedalieri, Federico, Dowling, Jonathan P., Lee, Hwang
We design a controlled-phase gate for linear optical quantum computing by using photodetectors that cannot resolve photon number. An intrinsic error-correction circuit corrects errors introduced by...