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Quantum Computing - Interplay of Classical Binary Computer Language with Quantum State Communication by kevinnag58

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Quantum Computing - Interplay of Classical Binary Computer Language with Quantum State Communication
![](https://research-assets.cbinsights.com/2021/01/25190817/Quantum_computing_classical_computing_comparison_feature_image.png)
[Photo Source](https://research-assets.cbinsights.com/2021/01/25190817/Quantum_computing_classical_computing_comparison_feature_image.png)

[** Author's Note ** Recently I published an article entitled: [Everything You've Ever Wanted to Know About Quantum Computers (But Were Afraid to Ask) - As Non-Technical as Possible](https://leofinance.io/@kevinnag58/everything-you-ve-ever-wanted-to-know-about-quantum-computers-but-were-afraid-to-ask-as-non-technical-as-possible). A question was posed to me on Publish0x by 'Trysty' as follows: 'I can grasp how a regular computer uses 0 and 1 to create a sort of Morse Code that can be manipulated to represent various things via programming languages, but HOW would the quantum computer decipher what it is we are attempting to achieve or represent if the qubit can be in any state at the same time? That would be like feeding both a zero and a one to a regular computer and expecting it to know if we were intending to send a 1 or a 0.'. If I understand Trysty's inquiry correctly the following article should provide him with the information he is seeking. (I hope).]

- Inputting Human Inquiries to a Quantum Computer:

Quantum computers are still in their early stages of development, and there is not yet a standardized way for humans to input requests into these systems. However, there are some methods that researchers and developers are exploring to interact with quantum computers.

One approach is to use classical computer interfaces, such as graphical user interfaces (GUIs) or command line interfaces (CLIs), to specify and run quantum algorithms. These interfaces can provide a simple way for users to input requests, such as selecting a quantum operation to perform, defining the parameters of the operation, and specifying the qubits that should be used.

Another approach is to use programming languages specifically designed for quantum computing, such as OpenQASM or Quil. These languages allow users to write programs that can be executed on a quantum computer and can provide a higher-level of abstraction, making it easier for users to input requests into the system.

It is also possible to use quantum APIs to interface with quantum computers. These APIs provide a simplified way for users to input requests and access the quantum computer's capabilities through a web-based interface.

In general, the methods for inputting requests into a quantum computer are still evolving and are likely to change as quantum computers become more advanced and widely used.

![](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig1/AS:462562924994562@1487295003936/The-hybrid-architecture-between-classical-and-quantum-computers.png)
[Photo Source](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig1/AS:462562924994562@1487295003936/The-hybrid-architecture-between-classical-and-quantum-computers.png)

- - How does a Quantum Computer Understand Binary Input by a Human (0, 1) to quantum language that can exist in multiple states at the same time?

Quantum computers do not work with classical binary inputs of 0s and 1s. Instead, they use quantum bits, or qubits, which can exist in a superposition of states, allowing them to perform multiple calculations at the same time.

To input data into a quantum computer, the data must first be encoded into a quantum state that can be represented by a qubit. This process is known as quantum state preparation. The specific encoding used depends on the type of quantum computer and the problem being solved, but it typically involves mapping classical data to a set of quantum states that can be represented by the qubits.

For example, one simple encoding is the amplitude encoding, where the amplitude of a qubit's wave function represents a binary value (0 or 1). Another example is the phase encoding, where the phase of a qubit's wave function represents a binary value.

Once the data is encoded in a quantum state, it can be manipulated and processed by the quantum computer using quantum gates, which are operations that can be performed on qubits. The results of these operations are represented by the quantum state of the qubits, which can be measured to determine the outcome of the computation.

It is important to note that the process of measuring a qubit collapses its quantum state into a classical binary value of either 0 or 1. This process is irreversible, so if additional computations need to be performed on the same data, a new quantum state must be prepared from the classical result and then processed by the quantum computer.

- More Information on Quantum State Preparation:

Quantum state preparation is the process of encoding classical data into a quantum state that can be processed by a quantum computer. This is an essential step in using a quantum computer, as the input data must be in a form that can be manipulated by the quantum computer's gates and algorithms.

There are several ways to prepare a quantum state, including:

- Amplitude encoding: In this method, the amplitude of the wave function of a qubit represents a binary value (0 or 1). The amplitude can be set to either 0 or 1, corresponding to the classical value, by applying appropriate operations to the qubit.

- Phase encoding: In this method, the phase of the wave function of a qubit represents a binary value. The phase can be set to either 0 or π, corresponding to the classical value, by applying appropriate operations to the qubit.

- State preparation via unitary operations: This method involves applying a unitary operation to a qubit that puts it into the desired quantum state. The unitary operation is determined by the desired quantum state and can be represented as a matrix.

- State preparation via measurements: This method involves initializing multiple qubits in a known state, such as the ground state or the "00" state, and then measuring the qubits to prepare the desired quantum state. This process is repeated multiple times to build up the desired quantum state.

The specific method used for quantum state preparation depends on the type of quantum computer, the problem being solved, and the desired accuracy of the results. In some cases, a combination of these methods may be used to prepare the desired quantum state.

It is important to note that the process of preparing a quantum state is typically probabilistic, meaning that the desired quantum state may not be achieved every time. This is due to the inherent uncertainty in quantum systems and can lead to errors in the final result of a quantum computation. To mitigate these errors, techniques such as quantum error correction and fault tolerance can be used to improve the accuracy of the results.

- A Quantum Computer's Response to Inquiry in Readable Format by Humans:

Quantum computers process data using quantum states and qubits, which can exist in a superposition of states. However, to present the results of a quantum computation to a human, the data must be translated from the quantum state representation into classical encoding, such as binary values of 0s and 1s. This process is known as quantum measurement.

In quantum measurement, the quantum state of a qubit is collapsed into a classical value of either 0 or 1 by performing a measurement operation on the qubit. The result of the measurement is probabilistic, meaning that the outcome of the measurement may not be predictable in advance.

To obtain the desired result of a quantum computation, multiple measurements may be performed on the qubits, and the results may be processed by a classical computer to obtain the final answer. The specific method used to process the measurement results depends on the type of quantum computer, the problem being solved, and the desired accuracy of the results.

It is important to note that the process of measuring a qubit collapses its quantum state into a classical binary value, making it impossible to perform additional computations on the same data without preparing a new quantum state. This is a fundamental property of quantum systems and is an important consideration when designing quantum algorithms and computations.

Once the measurement results have been processed, they can be presented to the user in a format that is easy to understand, such as a table, graph, or numerical value. The classical encoding of the results provides a human-understandable representation of the outcome of the quantum computation.

![](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig2/AS:462562924994563@1487295003968/The-relationship-of-classical-part-and-quantum-part-of-the-hybrid-algorithm.png)
[Photo Source](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig2/AS:462562924994563@1487295003968/The-relationship-of-classical-part-and-quantum-part-of-the-hybrid-algorithm.png)

![](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig3/AS:462562929188864@1487295004009/The-classical-part-and-the-quantum-part-of-the-hybrid-algorithm-RESULTS.png)
[Photo Source](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig3/AS:462562929188864@1487295004009/The-classical-part-and-the-quantum-part-of-the-hybrid-algorithm-RESULTS.png)

-More Information on Quantum Measurement:

Quantum measurement is the process of collapsing a quantum state into a classical binary value of either 0 or 1 by performing a measurement operation on a qubit. It is a fundamental concept in quantum computing, as it provides a way to obtain information about the quantum state of a qubit and translate that information into a form that can be used by classical computers and humans.

Quantum measurement works by observing the quantum state of a qubit and determining the probability of each outcome, either 0 or 1. The specific outcome that is observed is random and is determined by the quantum state of the qubit at the time of measurement.

The process of quantum measurement can be represented mathematically as an operator that acts on the wave function of the qubit. The measurement operator can be represented as a set of projection operators that correspond to the possible measurement outcomes. The wave function of the qubit is transformed by the measurement operator into a state that is proportional to the desired measurement outcome.

The specific method used for quantum measurement depends on the type of quantum computer and the problem being solved. For example, in some cases, a single-qubit measurement operation may be performed on a qubit, while in other cases, multiple qubits may be measured simultaneously to obtain information about the quantum state of a larger system.

It is important to note that the process of quantum measurement is irreversible, meaning that the quantum state of a qubit is destroyed by the measurement process. This is due to the inherent uncertainty in quantum systems, which makes it impossible to know both the exact quantum state of a qubit and the outcome of a measurement. To mitigate the effects of measurement in a quantum computation, techniques such as quantum error correction and fault tolerance can be used to improve the accuracy of the results.

In summary, quantum measurement is a crucial component of quantum computing, as it provides a way to obtain information about the quantum state of a qubit and translate that information into a form that can be used by classical computers and humans. The process of quantum measurement is probabilistic, irreversible, and subject to the inherent uncertainty in quantum systems, but can be mitigated by using techniques such as quantum error correction and fault tolerance.

![](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig4/AS:462562929188865@1487295004027/The-result-of-quantum-search-algorithm-with-6-qubits-input-data-and-64-elements-with-15.png)
[Photo Source](https://www.researchgate.net/profile/Zuriati-Zukarnain/publication/40714173/figure/fig4/AS:462562929188865@1487295004027/The-result-of-quantum-search-algorithm-with-6-qubits-input-data-and-64-elements-with-15.png)



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