Double individual-addressing multi-beam raman system
Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, to a double individual-addressing multi-beam Raman system for use in QIP systems. A technique is described in which a first muti-channel modulator (MCM), a first telecentric zoom lens, and a first interleaver that form a first optical path of the Raman system that receives a first array of beams and adjusts the first array of beams to individually address atomic-based qubits in a chain from a first direction. Moreover, a second MCM, a second telecentric zoom lens, and a second interleaver form a second optical path of the Raman system that receives a second array of beams and adjusts the second arrays of beams to individually address the atomic-based qubits in the chain from a second direction different from the first direction.
1 . A Raman system for double individual-addressing of atomic-based qubits, the system comprising:
a first telecentric zoom lens that forms with other optical components a first optical path of the Raman system configured to modify a first array of beams for each beam in the first array of beams to individually address a respective atomic-based qubit in a chain from a first direction; and
a second telecentric zoom lens that forms with other optical components a second optical path of the Raman system configured to modify a second array of beams for each beam in the second array of beams to individually address a respective atomic-based qubit in the chain from a second direction.
2 . The Raman system of claim 1 , wherein:
the first telecentric zoom lens has an outer pair of lenses and an inner pair of lenses, and
the second telecentric zoom lens has an outer pair of lenses and an inner pair of lenses.
3 . The Raman system of claim 2 , wherein:
the outer pair of lenses of the first telecentric zoom lens is of a fixed position and the inner pair of lenses of the first telecentric zoom lens is configured to move together, and
the outer pair of lenses of the second telecentric zoom lens is of a fixed position and the inner pair of lenses of the second telecentric zoom lens is configured to move together.
4 . The Raman system of claim 3 , wherein:
the first telecentric zoom lens includes a first base, a first housing attached to the first base and that is configured to hold the outer pair of lenses of the first telecentric zoom lens in the fixed position, and a first movable portion that is configured to slide along the first housing and to hold the inner pair of lenses of the first telecentric zoom lens, and
the second telecentric zoom lens includes a second base, a second housing attached to the second base and that is configured to hold the outer pair of lenses of the second telecentric zoom lens in the fixed position, and a second movable portion that is configured to slide along the second housing and to hold the inner pair of lenses of the second telecentric zoom lens.
5 . The Raman system of claim 2 , wherein:
the inner pair of lenses of the first telecentric zoom lens is of a fixed position and the outer pair of lenses of the first telecentric zoom lens is configured to move together, and
the inner pair of lenses of the second telecentric zoom lens is of a fixed position and the outer pair of lenses of the second telecentric zoom lens is configured to move together.
6 . The Raman system of claim 5 , wherein:
the first telecentric zoom lens includes a first base, a first housing attached to the first base and that is configured to hold the inner pair of lenses of the first telecentric zoom lens in the fixed position, and a first movable portion that is configured to slide along the first housing and to hold the outer pair of lenses of the first telecentric zoom lens, and
the second telecentric zoom lens includes a second base, a second housing attached to the second base and that is configured to hold the inner pair of lenses of the second telecentric zoom lens in the fixed position, and a second movable portion that is configured to slide along the second housing and to hold the outer pair of lenses of the second telecentric zoom lens.
7 . The Raman system of claim 2 , wherein:
each lens in the inner pair of lenses of the first telecentric zoom lens comprises one of a single lens or a compound lens, and
each lens in the outer pair of lenses of the first telecentric zoom lens comprises one of a single lens or a compound lens.
8 . The Raman system of claim 2 , wherein:
each lens in the inner pair of lenses of the second telecentric zoom lens comprises one of a single lens or a compound lens, and
each lens in the outer pair of lenses of the second telecentric zoom lens comprises one of a single lens or a compound lens.
9 . The Raman system of claim 1 , wherein each of the atomic-based qubits in the chain is an ion.
10 . The Raman system of claim 1 , wherein the first direction and the second direction are opposite directions.
11 . A method for double individual-addressing of atomic-based qubits in a Raman system, comprising:
receiving, by a first optical path of the Raman system made of a first telecentric zoom lens and other optical components, a first array of beams and modifying the first array of beams for each beam in the first array of beams to individually address a respective atomic-based qubit in a chain from a first direction; and
receiving, by a second optical path of the Raman system made of a second telecentric zoom lens and other optical components, a second array of beams and modifying the second array of beams for each beam in the second array of beams to individually address a respective atomic-based qubit in the chain from a second direction.
12 . The method of claim 11 , wherein:
the first telecentric zoom lens includes a first pair of lenses, a second pair of lenses, a base, a housing attached to the base and that is configured to hold the first pair of lenses of the telecentric zoom lens in the fixed position, and a movable portion that is configured to slide along the housing and to hold the second pair of lenses of the telecentric zoom lens, and
modifying the first array of beams includes using the first telecentric zoom lens to provide an appropriate spacing degree-of-freedom to the Raman system.
13 . The method of claim 12 , wherein the first pair of lenses of the first telecentric zoom lens is a pair of outer lenses held in the fixed position and the second pair of lenses of the first telecentric zoom lens is a pair of inner lenses that is movable.
14 . The method of claim 11 , wherein:
the second telecentric zoom lens includes a first pair of lenses, a second pair of lenses, a base, a housing attached to the base and configured to hold the first pair of lenses of the telecentric zoom lens in the fixed position, and a movable portion configured to slide along the housing and to hold the second pair of lenses of the telecentric zoom lens, and
the method further comprises modifying the second array of beams includes using the second telecentric zoom lens to provide an appropriate spacing degree-of-freedom to the Raman system.
15 . The method of claim 14 , wherein the first pair of lenses of the second telecentric zoom lens is a pair of outer lenses held in the fixed position and the second pair of lenses of the second telecentric zoom lens is a pair of inner lenses that is movable.