Quantum Information Transfer Between Light and Matter Systems

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current quantum information systems face challenges in transferring and encoding quantum information between matter and photonic systems, particularly in implementing quantum interactions between separated matter systems and in minimizing errors associated with photon loss during information transfer.

Innovation Solution

The development of processes and systems that enable the transfer of quantum information between light and matter systems by initializing matter systems, applying excitations, measuring combined states, and using entangled states to correct errors, allowing for the representation and manipulation of quantum information using both photonic and matter-based systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If quantum information is transferred between separated matter systems using conventional methods, then quantum interactions can be implemented, but technological and architectural challenges arise and errors occur due to photon loss

Engineering Contradiction:

Improvequantum information transfer reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs photonic modes as intermediary carriers to transfer quantum information between spatially separated matter systems. The quantum state is encoded in photonic modes that mediate the interaction between matter systems, avoiding direct matter-matter interaction and thus reducing complexity while maintaining reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent transforms quantum information between different representations by changing the physical parameters of the carrier system. Quantum information is encoded in photonic mode parameters (such as polarization, frequency) and transferred to matter system parameters (such as atomic spin states), enabling reliable transfer across different physical domains

Inventive Principle:

Principle #35Parameter changes

2Speed

If quantum information is stored in photonic systems, then fast transmission is achieved, but storage capability is limited due to inherent photon movement

Engineering Contradiction:

Improveinformation transmission speedVSAvoidquantum information storage duration

Core Design Contradiction:

SpeedVSDuration of action of stationary object

Solution Approach 1:

The patent uses photonic modes as temporary intermediaries for quantum information storage and transmission. Photons serve as mobile carriers that can be stored in optical cavities or waveguides for extended periods while maintaining quantum coherence, thus achieving both fast transmission and durable storage

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces traditional matter-based storage systems with photonic-based systems. By substituting stationary matter qubits with photonic qubits confined in optical structures, the system achieves faster access and transmission speeds while maintaining storage capability through photonic confinement techniques

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Duration of action of stationary object

If quantum information is transferred from light to matter representation, then storage capability is improved, but errors occur due to photon loss during transfer

Engineering Contradiction:

Improvequantum information storage durationVSAvoidquantum information transfer reliability

Core Design Contradiction:

Duration of action of stationary objectVSReliability

Solution Approach 1:

The patent implements error mitigation by preparing the quantum transfer process with beforehand cushioning measures. Quantum error correction codes are applied to the photonic modes before transfer, and decoherence protection techniques are used to cushion against photon loss during the light-matter transfer process

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent employs feedback mechanisms to monitor and correct errors during quantum information transfer. Measurement-based feedback is used to detect photon loss events and apply corrective operations to the matter system state, thereby maintaining transfer reliability while achieving durable storage

Inventive Principle:

Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach effectively transfers and encodes quantum information, minimizing errors and enabling efficient storage and manipulation of quantum states, thereby overcoming the limitations of standalone matter and photonic systems.

Implementation Method 1

applying to the matter system an excitation capable of exciting at least one of the basis states to a corresponding excited state

Methodology Applied

Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 2

measuring a combined state of the input mode and an emission mode for photons emitted from the matter system when the matter system transitions from the excited state

Methodology Applied

Scientific EffectPhotoluminescence: Photoluminescence

Data Source

PatentUS8023828B2Quantum information conversion between matter and light representations

Publication Date: 2011.09.20 HEWLETT PACKARD ENTERPRISE DEV LP

AI summary

Structures and methods allow: transfer of quantum information represented using the states of light to a representation using the states of matter systems; transfer of quantum information represented by the states of matter systems to a representation using the states of light; and error resistant encoding of quantum information using entangled states of matter and light to minimize errors.