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	Type	Supercond-ucting	Supercond-ucting	Supercond-ucting	Supercond-ucting	Trapped Ions	Trapped Ions	Trapped Ions	Trapped Ions	Silicon Spin	Silicon Spin	Silicon Spin	Silicon Spin	Photonics	Photonics	Photonics	NV Diamond	Neutral Atoms	Topological
	Sub-type	Tunable	Fixed Freq.	Parametric	Flux	Hyperfine	Optical	NF Microwave	GF Microwave	Si Mos	Si SiGe	Imp. Donor P	STM Donor P	SOI	Si3N4	Other
Lifetime (T2)	seconds	1.5E-5	5.0E-5	2.0E-5	5.0E-8	50	0.2	50	1.6	3.3E-6	1.0E-6	0.55		0.00015		0.00015	10	0.32
Best 2Q gate	%	0.997	0.991	0.992		0.9992	0.996	0.997	0.985	0.98	0.92		0.9	0.98			0.992	0.974
2Q Gate speed	seconds	1.2E-8	1.7E-7	1.76E-7		5.0E-5	1.6E-6	0.00325	0.0027	8.0E-8	1.0E-7		8.0E-10	1.0E-9		1.0E-9	0.0001	1.0E-6
Lifetime/ speed	cycles	1250	294	114		1000000	125000	15385	593	41	10			150000		150000	100000	320000
Environment		20mK	20mK	20mK	20mK	Vacumn	Vacumn	Vacumn	Vacumn	1K	1K	20mK	20mK	2K	2K	2K	Ambient	Vacumn
Largest Device		53Q	27Q	31Q	2000Q	11Q	20Q	2Q	2Q	2Q	2Q	2Q	2Q		12 mode	100 mode	10Q	51Q
Largest QV			128			128
USP		Flexible control & calibration	Streamlined control requirements	Hybrid tuanable/ fixed benefits	Quantum Annealing in NISQ era	High fidelity & connectivity	Easier optical integration	High fidelity potential without lasers	Very modular and scalable	CMOS compatibility	CMOS with lower disorder lattice	CMOS with improved lifetimes	Atomic level precision manufacture	Leverage silicon photonics to scale rapidly	Leverage qutuam squeezed light	Leverage standard components	Room temperature operation	Enhanced connectivity	Greatly reduced overheads
Key Challenge		Scaling-up control wiring	2Q gate fidelities	2Q gate fidelities	Demonstrating Quantum Advantage	Scaling-up laser control	Limited coherence lifetimes	Demonstrate multi-qubit device	2Q gate fidelities	Demonstrate multi-qubit device	Demonstrate multi-qubit device	Demonstrate basic qubit operations	Demonstrate basic qubit operations	Photon loss	Photon counting detectors	Fibre wiring complexity	Poor NV-NV gate fidelity limits scaling	Scaling-up laser control	Create qubit
FTQC footprint		Building	Building	Building		Building	Building	Building	Building	Chip	Chip	Chip	Chip	Compact	Compact	Huge	Network	Building
Notable Players		Google OriginQ QuTech QCI IQM SeeQC	IBM OQC	Rigetti Bleximo	D-Wave Qilimanjaro	IonQ Honeywell	AQT AQTION NextGenQ	Oxford Ionics	Universal Quantum MicroQC NextGenQ	Intel/Qutech Origin Quantum Quantum Motion Hitachi	Intel/Qutech	Photonic Inc	SQC	PsiQ	Xanadu QuiX	UTSC (Jiuzhang) ORCA	Quantum Brilliance	ColdQuanta QuEra Pasqal Atom Computing	Microsoft

For the references supporting this data please see the accompanying SWOT analysis documents.

Fact Based Insight gives precedence to: articles published in refereed journals, arXiv articles, conference presentations, personal correspondence.

Note: IonQ recently announced 32Q device with expected high QV not yet included as no performance results yet reported.

This data represents Fact Based Insights understanding of the data at the time of publication. We apologise for any misunderstandings or omissions. If you believe your data is not correctly represented here, or that there is other news we should hear about, please contact us.

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