تقرير
Counter-factual carving exponentially improves entangled-state fidelity
| العنوان: | Counter-factual carving exponentially improves entangled-state fidelity |
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| المؤلفون: | Ramette, Joshua, Sinclair, Josiah, Vuletić, Vladan |
| سنة النشر: | 2024 |
| المجموعة: | Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Physics - Atomic Physics |
| الوصف: | We propose a new method, "counter-factual" carving, that uses the "no-jump" evolution of a probe to generate entangled many-body states of high fidelity. The probe is coupled to a target ensemble of qubits and engineered to exponentially decay at a rate depending on the target collective spin, such that post-selecting on observing no probe decay precisely removes select faster-decaying spin components. When probe and $N$-qubit target interact via a cavity mode of cooperativity $C$, counter-factual carving generates entangled states with infidelities of $e^{-C/N}$, an exponential improvement over previous carving schemes. Counter-factual carving can generate complex entangled states for applications in quantum metrology and quantum computing. Comment: Updated to include acknowledgements |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2401.11407 |
| رقم الأكسشن: | edsarx.2401.11407 |
| قاعدة البيانات: | arXiv |
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