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A 2x2 quantum dot array in silicon with fully tuneable pairwise interdot coupling
Wee Han Lim, Tuomo Tanttu, Tony Youn +12
Recent advances in semiconductor spin qubits have achieved linear arrays exceeding ten qubits. Moving to two-dimensional (2D) qubit arrays is a critical next step to advance toward…
A 300 mm foundry silicon spin qubit unit cell exceeding 99% fidelity in all operations
Paul Steinacker, Nard Dumoulin Stuyck, Wee Han Lim +24
Fabrication of quantum processors in advanced 300 mm wafer-scale complementary metal-oxide-semiconductor (CMOS) foundries provides a unique scaling pathway towards commercially via…
Violating Bell's inequality in gate-defined quantum dots
Paul Steinacker, Tuomo Tanttu, Wee Han Lim +15
Superior computational power promised by quantum computers utilises the fundamental quantum mechanical principle of entanglement. However, achieving entanglement and verifying that…
Spin Qubits with Scalable milli-kelvin CMOS Control
Samuel K. Bartee, Will Gilbert, Kun Zuo +14
A key virtue of spin qubits is their sub-micron footprint, enabling a single silicon chip to host the millions of qubits required to execute useful quantum algorithms with error co…
A Room-Temperature Solid-State Maser Amplifier
Tom Day, Maya Isarov, William J. Pappas +6
Masers once represented the state-of-the-art in low noise microwave amplification technology, but eventually became obsolete due to their need for cryogenic cooling. Masers based o…
Coherent all-optical control of the germanium vacancy in diamond
C. Adambukulam, J. A. Scott, S. Q. Lim +3
The germanium vacancy in diamond (GeV) is a promising candidate for color center based quantum networking. Yet, like for other group-IV vacancy defects in diamond, achieving fast,…