Remove mention of QCTRL performance strategy (#1982)
As of 18 Sep the Q-CTRL performance strategy will be deprecated. Removing mention of it in our docs. Sneaking in a typo fix I found on the index page.
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@ -56,15 +56,6 @@ basis. Specific error mitigation methods are not guaranteed to be
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applied at each resilience level.
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</Admonition>
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<Admonition type="note">
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If using an IBM Cloud® Qiskit Runtime service instance with Q-CTRL performance management enabled, do not specify runtime optimization or resilience levels, as the strategy includes an automatic preset.
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Setting `optimization_level` or `resilience_level` equal to 0 will result in an
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execution error. Levels 1, 2, and 3 are permitted but will not impact performance.
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Setting other options will likewise not impact performance, and it may result in a
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runtime warning. For more information visit the [Q-CTRL documentation](https://docs.q-ctrl.com/q-ctrl-embedded).
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</Admonition>
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## Configure Estimator with resilience levels
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You can use resilience levels to specify error mitigation techniques, or you can set custom techniques individually as described in [Custom error settings.](#advanced-error) You cannot specify resilience levels in Sampler. However, you can set custom techniques individually.
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@ -196,7 +187,6 @@ For instructions to turn off all error mitigation, see the [Turn off all error s
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<Admonition type="tip" title="Recommendations">
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- Walk through an example that uses error mitigation in the [Cost function lesson](https://learning.quantum.ibm.com/course/variational-algorithm-design/cost-functions#primitives) in IBM Quantum Learning.
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- Learn more about [Q-CTRL](https://docs.q-ctrl.com/q-ctrl-embedded).
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- Learn more about [error mitigation and error suppression techniques.](error-mitigation-and-suppression-techniques)
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- [Configure error suppression.](configure-error-suppression)
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- Explore other [options.](runtime-options-overview)
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@ -11,7 +11,7 @@ In addition, many open-source projects are part of the broader Qiskit ecosystem.
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IBM is committed to the responsible development of quantum computing. Learn more and review our responsible quantum principles in the [Responsible quantum computing and inclusive tech](/responsible-quantum-computing) topic.
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IBM is committed to the responsible development of quantum computing. Learn more and review our responsible quantum principles in the [Responsible quantum computing](/responsible-quantum-computing) topic.
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## The Qiskit SDK
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@ -200,10 +200,6 @@ Alternatively, you can also access quantum processors with REST APIs, enabling y
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If you are an administrator who needs to set up Qiskit Runtime on Cloud for your organization, refer to [Plan Qiskit Runtime for an organization](https://cloud.ibm.com/docs/quantum-computing?topic=quantum-computing-quickstart-org).
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</Admonition>
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<Admonition type="note">
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When selecting a performance strategy there are two options available. One from IBM (default) another from Q-CTRL. The IBM performance strategy allows you to leverage all of the standard options available with [Qiskit Runtime](../api/qiskit-ibm-runtime) and the Q-CTRL strategy uses an automated preset. To learn more about the Q-CTRL option, visit the [Q-CTRL documentation](https://docs.q-ctrl.com/q-ctrl-embedded).
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</Admonition>
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1. Find your access credentials.
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1. Find your API key. From the [API keys page](https://cloud.ibm.com/iam/apikeys), view or create your API key, then copy it to a secure location so you can use it for authentication.
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2. Find your Cloud Resource Name (CRN). Open the [Instances page](https://cloud.ibm.com/quantum/instances) and click your instance. In the page that opens, click the icon to copy your CRN. Save it in a secure location so you can use it for authentication.
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@ -217,10 +213,6 @@ Alternatively, you can also access quantum processors with REST APIs, enabling y
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service = QiskitRuntimeService(channel="ibm_cloud", token="<IBM Cloud API key>", instance="<IBM Cloud CRN>")
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```
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<Admonition type="note">
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If you set up your instance in step 3 to include Q-CTRL performance management, when initializing the `QiskitRuntimeService()` you should include the additional argument `channel_strategy="q-ctrl"`. To learn more about Q-CTRL performance management strategy visit the [Q-CTRL documentation](https://docs.q-ctrl.com/q-ctrl-embedded).
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</Admonition>
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You can optionally use the `save_account()` method to save your credentials for easy access later on, before initializing the service.
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```python
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