Quantum Technologies

Partner with G&H to power the next generation of quantum breakthroughs.

A visually striking, stylized quantum computer component featuring glowing, curved copper-colored wires arranged in symmetrical layers. The intricate structure is housed in a metallic frame and is illuminated with vibrant orange and yellow lighting, creating reflections on a dark, glossy surface. The background is softly blurred with dynamic light flares, emphasizing the futuristic and high-tech aesthetic

Advancing Quantum Computing with G&H AO Technology

G&H is at the forefront of quantum innovation, providing advanced acousto-optic (AO) solutions that drive the latest generation of quantum computers. Our high-performance AO devices enable precise light interactions with cold atoms and ions, essential for quantum computing, quantum communication, and quantum sensing applications.

We offer the industry’s most extensive range of UV, visible, and NIR AO solutions tailored for quantum applications:

Acousto-Optic Deflectors

Precise manipulation and positioning of cold atoms and ions
Ultra-fast switching and routing of optical signals
High-speed addressing of individual or multiple qubits, enabling beam multiplexing

Acousto-Optic Modulators

Precise light frequency shifting for atom cooling and trapping
Optimized photon-qubit interaction for enhanced quantum processing

Acousto-Optic Multichannel Modulators

Fast, parallel addressing of qubits for scalable quantum architectures

Quantum technologies, A futuristic, brightly lit laboratory interior with a suspended quantum computer at the center. The quantum processor, made of intricate gold-plated components and concentric cooling stages, hangs from the ceiling. It features tiered, circular platforms with connecting wires and delicate structures, emphasizing its advanced and complex design. The room has reflective flooring, grid-patterned ceiling lights, and glass walls, suggesting a clean and high-tech environment

Advancing Quantum Sensing with G&H FO Technology

G&H is leading the way in quantum innovation with advanced fiber optic solutions that empower the next generation of quantum technologies. Our high-performance Fiber-Q® acousto-optic modulators and Visible Wavelength PM Couplers provide precise control over laser output and ensure exceptional reliability in quantum computing, quantum communication, and quantum sensing applications.

Fiber optic solutions enable quantum researchers and engineers to precisely modulate lasers tailored for quantum applications:

Fiber-Coupled Acousto-Optic Modulators

High extinction ratio for superior optical signal clarity
Low insertion loss to maximize optical efficiency
Stable performance in both polarization-maintaining (PM) and non-PM formats
Modulation frequencies up to 80 MHz for visible and infrared wavelengths
Rugged hermetic design for long-term reliability and seamless integration into all-fiber and OEM systems

Visible Wavelength PM Couplers

High polarization extinction ratio
Ultra-low excess loss and high power handling
450nm to 700nm available
Slow axis operation as standard, fast and dual axis available

Quantum technologies, A futuristic data center interior with tall server racks on either side, illuminated by vertical LED lights. At the center of the image is a gold-colored quantum computer cryostat, suspended within a well-lit enclosure. The quantum hardware features multiple stacked circular components with wiring extending downward. The environment is clean, high-tech, and evokes a sense of advanced computing or scientific research infrastructure

Supermirrors for Superposition

In quantum optics, photons are not just particles of light – they are carriers of information. From entangled photon pairs and quantum interference to optical atomic clocks and high-finesse cavities, these experiments hinge on precise, low-loss control of light. At the heart of this control? Research-grade mirror substrates.

G&H manufactures research-grade superpolished mirror substrates designed for high-performance quantum optics systems:

Ultra-low surface roughness (< 1 Å RMS) to minimize scatter and maintain coherence
Flat and concave geometries for interferometry, cavity QED, and laser stabilization
Substrates in fused silica, silicon, and Zerodur®—each optimized for thermal, mechanical, and optical stability
Verified with ZygoNexView NX2 interferometry and cavity ring-down spectroscopy (CRDS) for finesse validation

Quantum Applications

G&H’s precision optic and photonic components are enabling breakthroughs across various quantum domains, including:

Quantum computing: enhancing qubit control and quantum gate operations
Quantum communication: enabling secure transmission of quantum information
Quantum sensors: improving precision measurements with advanced components
Quantum device software design: supporting robust quantum hardware-software integration
Vapour cells for quantum standards: advancing quantum metrology and precision timekeeping

Acousto-optic device manufacturing - Quantum technologies, A gloved technician holds a precision-engineered scientific device featuring a coiled red wire, metallic casing, and reflective components. The device appears to be part of an advanced optical or quantum system. The background is softly blurred, drawing focus to the intricate detail and craftsmanship of the component

Why Choose G&H for Quantum Technology?

Proven expertise: decades of experience in optics technology and photonics innovation
Broad wavelength coverage: industry-leading portfolio spanning UV, visible, and NIR ranges
Custom solutions: tailored designs to meet the unique demands of quantum applications

a quantum technologies - 3D render of a quantum computer cryostat system, showing a vertically suspended structure with multiple circular gold-colored plates connected by numerous thin wires. The design highlights the intricate architecture and advanced technology used in quantum computing hardware

G&H Quantum News & Articles

At G&H, we are proud to celebrate World Quantum Day, and the United Nations' declaration of 2025 as the International Year of Quantum Science and Technology (IYQ). Check out our latest articles:

The Era of Quantum has Arrived - Celebrating World Quantum Day and the UN International Year of Quantum Science and Technology (IYQ) by highlighting how our people and our technologies are helping move quantum from mystery to momentum.
Tough enough for space, stable enough for quantum - At G&H, our take on Fiber-coupled acousto-optic modulators (FCAOM) is Fiber-Q®, a product that has won both the Queen’s Award for Enterprise (Innovation) and the Institute of Physics (IOP) Award for Innovation.
G&H steps up to the Quantum Technologies Challenge - G&H are playing a key role in the UK Government supported Quantum Technologies Challenge.

Photonic Solutions for Quantum Applications

Deflectors

Achieve unmatched precision and speed with G&H's acousto-optic deflectors (AO deflectors), with operating rates exceeding 250 MHz.

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Modulators

Modulators allow the intensity of light to be controlled and modulated at rates that far exceed mechanical shutters.

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Multi-Channel Modulators

Multi-channel modulators enable multiple beams to be modulated or deflected independently.

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Fiber-Q® Fiber-Coupled Acousto-Optic Modulators

Fiber-coupled acousto-optic modulators offer an elegant and robust solution for amplitude modulation.

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PM Couplers

PM fiber couplers are high polarization extinction ratio couplers with slow axis, fast axis, or axis-independent launch conditions.

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Mirrors

We are a leading provider of superpolished optical components for 40+ years, offering a proprietary process that caters to high volume production requirements as well as small volume, specialized applications.

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