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Amazon Braket

AQT

Overview

AQT is a leading supplier of trapped-ion quantum computer hardware,
built with the know-how of three decades of experience from the University of
Innsbruck, Austria. Through Amazon Braket, AQT enables researchers and industry
professionals to build their quantum algorithms based on reproducible results.

“Finance, chemistry, pharmaceutical, logistics or security applications are among the most common problems solved on AQT quantum computers. We have been committed to a customer driven approach ever since the foundation of AQT. We are excited to offer our technology to an even wider customers base together with AWS, and curious to learn and grow with the community and partners.”

Thomas Monz, CEO & Co-Founder of AQT

“At AQT we invest a lot of resources in building the next generation of trapped-ion quantum computers. The main focus is on scaling the hardware to a higher number of qubits, higher fidelities, and faster throughput.”

Rainer Blatt, Professor University Innsbruck & Co-Founder of AQT 

“Looking at the progress of trapped-ion quantum computing from the first
experimental realization of the Cirac-Zoller gate in 2003 to the performance of
today’s commercial machines, makes me optimistic that we will be able to build
hardware useful for tackling real world problems in the coming years.“

Peter Zoller, Professor Univ. Innsbruck & Co-Founder of AQT

 

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Quantum Computing with trapped ions

The four most prominent advantages of AQT’s trapped ion technology are:

Ions are identical by nature

Missing alt text value Single ions make up qubits which are indistinguishable by the laws of physics.

Ions feature long coherence times

Missing alt text value AQT uses a radio frequency trap to capture ionized calcium atoms. These traps feature a deep confinement and enable the quantum mechanical ground state, a prerequisite for high fidelity gates. The deep trapping potential also avoids atom loss, an important advantage, e.g. with respect to other modalities, when it comes to practical computing. AQT’s first generation of quantum processors rely on macroscopic traps which feature the lowest heating rates of all architectures and are thus the best choice for qubit numbers up to 20.

Consistent high-fidelity gates

Missing alt text value AQT uses an electronic quadrupole transition in 40Ca+ ions to represent the two qubit states. This transition is driven by a high-quality narrow linewidth laser featuring a very high relative frequency stability. The direct transition avoids populating intermediate states and thus lowers the losses due to spontaneous emission. Special focus has been taken to achieve a low cross talk between neighboring qubits, which is a crucial factor for high gate fidelities. Moreover, AQT’s auto-calibrating hardware offers a reliable, constant, and high gate quality over extended time periods.

AQT offers all-to-all connectivity

Missing alt text value A string of ions is addressed individually by laser light, precisely controlled in frequency and position. The Coulomb interaction in the ion crystal mediates long rage interactions between all ions in the string, thus enabling full connectivity. In other words, arbitrary pairs of qubits can be entangled with each other. This entanglement and the naturally long coherence times of ions allow for the execution of deep circuits.

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