dorsal/arxiv
View SchemaDetermination of the phase of an electromagnetic field via incoherent detection of fluorescence
| Authors | M. S. Shahriar, Prabhakar Pradhan, Jacob Morzinski |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0205120 |
| URL | https://arxiv.org/abs/quant-ph/0205120 |
| DOI | 10.1103/PhysRevA.69.032308 |
| Journal | Phys. Rev. A 69, 032308 (2004) |
Abstract
We show that the phase of a field can be determined by incoherent detection of the population of one state of a two-level system if the Rabi frequency is comparable to the Bohr frequency so that the rotating wave approximation is inappropriate. This implies that a process employing the measurement of population is not a square-law detector in this limit. We discuss how the sensitivity of the degree of excitation to the phase of the field may pose severe constraints on precise rotations of quantum bits involving low-frequency transitions. We present a scheme for observing this effect in an atomic beam, despite the spread in the interaction time.
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"abstract": "We show that the phase of a field can be determined by incoherent detection\nof the population of one state of a two-level system if the Rabi frequency is\ncomparable to the Bohr frequency so that the rotating wave approximation is\ninappropriate. This implies that a process employing the measurement of\npopulation is not a square-law detector in this limit. We discuss how the\nsensitivity of the degree of excitation to the phase of the field may pose\nsevere constraints on precise rotations of quantum bits involving low-frequency\ntransitions. We present a scheme for observing this effect in an atomic beam,\ndespite the spread in the interaction time.",
"arxiv_id": "quant-ph/0205120",
"authors": [
"M. S. Shahriar",
"Prabhakar Pradhan",
"Jacob Morzinski"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.69.032308",
"journal_ref": "Phys. Rev. A 69, 032308 (2004)",
"title": "Determination of the phase of an electromagnetic field via incoherent detection of fluorescence",
"url": "https://arxiv.org/abs/quant-ph/0205120"
},
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